A. L Thuy t Cu 1. Anion X- v cation Y2+ u c cu hnh electron lp ngoi cng l 3s23p6. V tr ca cc nguyn t trong bng tun hon cc nguyn t ha hc l: A. X c s th t 17, chu k 3, nhm VIIA (phn nhm chnh nhm VII); Y c s th t 20, chu k 4, nhm IIA (phn nhm chnh nhm II). B. X c s th t 18, chu k 3, nhm VIIA (phn nhm chnh nhm VII); Y c s th t 20, chu k 3, nhm IIA (phn nhm chnh nhm II). C. X c s th t 17, chu k 4, nhm VIIA (phn nhm chnh nhm VII); Y c s th t 20, chu k 4, nhm IIA (phn nhm chnh nhm II). D. X c s th t 18, chu k 3, nhm VIA (phn nhm chnh nhm VI); Y c s th t 20, chu k 4, nhm IIA (phn nhm chnh nhm II). Cu 2. Cu hnh electron ca ion X2+ l 1s22s22p63s23p63d6. Trong bng tun hon cc nguyn t ho hc, nguyn t X thuc. A. chu k 3, nhm VIB. B. chu k 4, nhm VIIIB. C. chu k 4, nhm IIA. D. chu k 4, nhm VIIIA. Cu 3. Nguyn t ca nguyn t X c electron mc nng lng cao nht l 3p. Nguyn t ca nguyn t Y cng c electron mc nng lng 3p v c mt electron lp ngoi cng. Nguyn t X v Y c s electron hn km nhau l 2. Nguyn t X, Y ln lt l A. kh him v kim loi. B. kim loi v kim loi. C. phi kim v kim loi. D. kim loi v kh him. Cu 4. Trong mt nhm A (phn nhm chnh), tr nhm VIIIA (phn nhm chnh nhm VIII), theo chiu tng ca in tch ht nhn nguyn t th. A. tnh kim loi tng dn, m in tng dn. B. tnh kim loi tng dn, bn knh nguyn t gim dn. C. m in gim dn, tnh phi kim tng dn. D. tnh phi kim gim dn, bn knh nguyn t tng dn. Cu 5. Cho cc nguyn t M (Z = 11), X (Z = 17), Y (Z = 9) v R (Z = 19). m in ca cc nguyn t tng dn theo th t. A. R < M < X < Y. B. M < X < R < Y. C. Y < M < X < R. D. M < X < Y < R. Cu 6. Bn knh nguyn t ca cc nguyn t: 3Li, 8O, 9F, 11Na c xp theo th t tng dn t tri sang phi l A. F, Li, O, Na. B. F, Na, O, Li. C. Li, Na, O, F. D. F, O, Li, Na. Cu 7. Cho cc nguyn t: K (Z = 19), N (Z = 7), Si (Z = 14), Mg (Z = 12). Dy gm cc nguyn t c sp xp theo chiu gim dn bn knh nguyn t t tri sang phi l: A. K, Mg, N, Si. B. Mg, K, Si, N. C. K, Mg, Si, N. D. N, Si, Mg, K. Cu 8. Dy cc nguyn t sp xp theo chiu tng dn tnh phi kim t tri sang phi l: A. P, N, O, F. B. P, N, F, O. C. N, P, F, O. D. N, P, O, F. Cu 9. Hp cht trong phn t c lin kt ion l A. NH4Cl. B. HCl. C. NH3. D. H2O. Cu 10. Dy gm cc cht trong phn t ch c lin kt cng ho tr phn cc l: A. HCl, O3, H2S. B. H2O, HF, H2S. C. O2, H2O, NH3. D. HF, Cl2, H2O. Cu 11. Nguyn t ca nguyn t X c cu hnh electron 1s22s22p63s23p64s1, nguyn t ca nguyn t Y c cu hnh electron 1s22s22p5. Lin kt ho hc gia nguyn t X v nguyn t Y thuc loi lin kt. A. cho nhn. B. kim loi. C. cng ho tr. D. ion. Cu 12. Pht biu no sau y l ng ? A. th rn, NaCl tn ti di dng tinh th phn t. B. Photpho trng c cu trc tinh th nguyn t. C. Kim cng c cu trc tinh th phn t. D. Nc thuc loi tinh th phn t. Cu 5. Dy gm cc ion X+, Y- v nguyn t Z u c cu hnh electron 1s22s22p6 l: A. K+, Cl-, Ar. B. Na+, F-, Ne. C. Na+, Cl-, Ar. D. Li+, F-, Ne. B. Bi t p D ng 1: Xc nh s hi u nguyn t , c u hnh e v s h t trong nguyn t Cu 1. Mt nguyn t ca nguyn t X c tng s ht proton, ntron, electron l 52 v c s khi l 35. S hiu nguyn t ca nguyn t X l A. 17. B. 15. C. 23. D. 18. Cu 2. Nguyn t ca nguyn t X c tng s ht electron trong cc phn lp p l 7. S ht mang in ca mt nguyn t Y nhiu hn s ht mang in ca mt nguyn t X l 8 ht. Cc nguyn t X v Y ln lt l (bit s hiu nguyn t ca nguyn t: Na = 11; Al = 13; P = 15; Cl = 17; Fe = 26). A. Al v P. B. Fe v Cl. C. Al v Cl. D. Na v Cl. Cu 3. Trong hp cht ion XY (X l kim loi, Y l phi kim), s electron ca cation bng s electron ca anion v tng s electron trong XY l 20. Bit trong mi hp cht, Y ch c mt mc oxi ha duy nht. Cng thc XY l A. NaF. B. AlN. C. MgO. D. LiF. + 2Cu 4. HC A c to thnh t ion M v ion X .Tng s 3 loi ht trong A l 164 .Tng s cc ht mang in trong + 2ion M ln hn tng s ht mang in trong ion X l 6 .Trong nguyn t M , s ht proton t hn s ht ntron l 1 ht , trong nguyn t X s ht proton bng s ht ntron . M v X l A. K v O B. Na v S C. Li v S D. K v S Cu 5. Tng s ht proton, ntron , electron trong hai nguyn t ca nguyn t X v Y l 96 trong tng s ht mang in nhiu hn tng s ht khng mang in l 32 . S ht mang in ca nguyn t Y nhiu hn ca X l 16. X v Y ln lt l

CHUYN 1: C U T O NGUYN T B NG TU N HON CC NGUYN T HA H C LIN K T HA H C

1

A. Mg v Ca D ng 2: bi t p v ng v

B. Be v Mg63 29

C. Ca v Sr

D. Na v Ca

Cu 6. Trong t nhin, nguyn t ng c hai ng v l Thnh phn phn trm tng s nguyn t ca ng v A. 73%. B. 54%. 63 65 Cu 7. Trong t nhin Cu c hai ng v Cu v 63 KL ca Cu trong Cu2O l gi tr no di y ? A. 64,29% B.65 29

Cu v 65 Cu . Nguyn t khi trung bnh ca ng l 63,54. 29D. 27%. 65 Cu chim 27% v s nguyn t .Phn trm D. 35 Cl(75%) v 37 Cl (25%) .Phn trm v KL ca 35 Cl

Cu l

C. 50. Cu , trong ng v C.

Cu 8. Nguyn t Cl trong t nhin l mt hh gm hai ng v trong mui kaliclorat KClO3 l

A. 7,24% B. C. D. D ng 3 :D a vo ha tr c a nguyn t v i hi ro v oxi Cu 8. Cng thc phn t ca hp cht kh to bi nguyn t R v hiro l RH3. Trong oxit m R c ho tr cao nht th oxi chim 74,07% v khi lng. Nguyn t R l A. As. B. S. C. N. D. P. Cu 9. Nguyn t ca nguyn t X c cu hnh electron lp ngoi cng l ns2np4. Trong hp cht kh ca nguyn t X vi hiro, X chim 94,12% khi lng. Phn trm khi lng ca nguyn t X trong oxit cao nht l A. 40,00%. B. 50,00%. C. 27,27%. D. 60,00%. Cu 10. Nguyn t to HC kh vi hiro c CT RH3 . Trong oxit cao nht ca R , nguyn t oxi chim 74,07% khi

lng .Xc nh nguyn t : A.Nit B. Phtpho C. Silic D. Asen Cu 11. Nguyn t R thuc nhm VIA trong bng HTTH trong hp cht ca R vi H (khng c thm nguyn t khc) c 5,882% hiro v khi lng .R l nguyn t no di y ? L u hunh Cu 12. Nguyn t R c ha tr cao nht vi oxi l a v ha tr trong hp cht kh vi hiro l a .Cho 8,8 g oxit cao nht ca R tc dng hon ton vi dd NaOH thu c 21,2 g mt mui trung ha .Vy R l C Cu 13. X , Y l hai cht kh , X c CT AOx trong oxi chim 60% khi lng . Y c CT BH trong m : m = 1 : n H B 3 .T khi hi ca Y so vi X bng 0,2 .Vy A v B l S v C Cu 14. T l khi lng phn t gia HC kh vi hiro ca nguyn t R vi oxit cao nht ca n l 17 : 40 . Gi tr nguyn t khi ca R l 32 Cu 15. C hai kh A v B , A l HC ca nguyn t X vi oxi , B l HC ca nguyn t Y vi hiro .Trong mt phn t A hay B ch c mt nguyn t X hay Y .Trong A oxi chim 50% , trong B hiro chim 25% v KL .X v Y l S v C Cu 16. Nguyn t R c HC vi hiro l H R O .Trong HC oxit cao nht ca R th R chim 52% KL . Cu hnh electron 2 2 7 ca R l 5 1 [Ar]3d 4s Cu 17. Nguyn t X c oxit cao nht c t khi hi so vi hiro l 91,5 . Vy X l Cl Cu 18. Mt nguyn t c oxit cao nht l R2O7 , nguyn t ny to vi hiro mt cht kh trong hidro chim

0,78% v khi lng .Cu hnh lp ngoi cng ca R l 2 5 5s 5p D ng 4: D a vo v tr trong b ng tu n hon Cu 12. Hai nguyn t A,B hai nhm k tip nhau trong bng HTTH , tng s proton trong hai nguyn t A,B bng 19 .Bit A,B to c HC X trong tng s proton bng 70 . Tm CTPT ca X Al 4 C 3 X v Y l nguyn t hai phn nm chnh k tip nhau c tng in tch dng bng 23 . k thng chng tc dng c vi nhau .X v Y l P v O Cu 12. X v Y l hai nguyn t cng thuc mt phn nhm chnh thuc hai chu k k tip nhau ca bng HTTH .Tng s proton trong ht nhn ca hai nguyn t bng 58 . S hiu nguyn t ca X v Y ln lt l 20 , 38 Cu 12. A v B l hai nguyn t hai nhm k tip thuc hai chu k lin tip trong bng HTTH .Tng s proton trong ht nhn nguyn t ca A v B l 31 .in tch ca hai nguyn t A v B l

2

11 v 20 Cu 12. HC X c dng A2B5 tng s ht trong phn t l 70 .Trong thnh phn ca B s proton bng s ntron , A thuc chu k 3 ca bng HTTH . A l P Cu 12. X v Y l hai nguyn t hai phn nhm chnh k tip nhau c tng in tch dng bng 23 . X v Y l Na,Mg ho c O,P ho c N,S Cu 12. X v Y l hai nguyn t hai phn nhm chnh k tip nhau c tng in tch dng bng 23.Trong HC vi oxi Y c ha tr cao nht .X v Y l N,S c> HC c CT MAx trong M chim 46,67% v KL .M l KL , A l PK thuc chu k III .Trong ht nhn ca M c np=4 .Trong ht nhn ca A c n=p .Tng s proton trong MAx l 58 .Hai nguyn t M v A l Fe v S d> Tng s ht proton , ntron , electron trong phn t MX3 l 196 , trong s ht mang in nhiu hn s

ht khng mang in l 60 . Khi lng nguyn t ca X ln hn ca M l 8 . Tng s ht (p,n,e) trong X nhiu hn 3+ trong M l 16 . Vy M v X ln lt l Al v Cl Cu 27 : Hp cht X c khi lng phn t l 76 v to bi 2 nguyn t A v B. A,B c s oxiho cao nht l +a,+b v c s oxiho m l -x,-y; tho mn iu kin: a=x, b=3y. Bit rng trong X th A c s oxiha l +a. Cu hnh electron lp ngoi cng ca B v cng thc phn t ca X tng ng l A. 2s22p4 v NiO. B. CS2 v 3s23p4. C. 3s23p4 v SO3. D. 3s23p4 v CS2. Cu 28 : Hp cht Z c to bi hai nguyn t M v R c cng thc MaRb trong R chim 20/3 (%) v khi lng. Bit rng tng s ht proton trong phn t Z bng 84. Cng thc phn t ca Z l A. Al2O3. B. Cu2O. C. AsCl3. D. Fe3C. =================== Chuyn 2: PH N NG OXI HA KH V CN B NG HA H C Ph n ng oxi ha kh Bi t p c b n Cu 1 : Tng h s ca cc cht trong phn ng Fe3O4 + HNO3 Fe(NO3)3 + NO + H2O l A. 55 B. 20. C. 25. D. 50. Cu 5 : Trong phn ng: 3Cu + 8HNO3 3Cu(NO3)2 + 2NO + 4H2O. S phn t HNO3 ng vai tr cht oxi ha l A. 8. B. 6. C. 4. D. 2. Cu 7 : Cho cc cht v ion sau: Zn; Cl2; FeO; Fe2O3; SO2; H2S; Fe2+; Cu2+; Ag+. S lng cht v ion c th ng vai tr cht kh l A. 9. B. 8. C. 7. D. 6. Cu 8 : Cho cc cht v ion sau: Zn; Cl2; FeO; Fe2O3; SO2; Fe2+; Cu2+; Ag+. S lng cht v ion va ng vai tr cht kh, va ng vai tr cht oxi ha l A. 2. B. 4. C. 6. D. 8. Cu 13: Chia 22,0 gam hn hp X gm Mg, Na v Ca thnh 2 phn bng nhau. Phn 1 tc dng ht vi O 2 thu c 15,8 gam hn hp 3 oxit. Phn 2 tc dng vi dung dch HCl d thu c V lt kh H2 (ktc). Gi tr ca V l A. 6,72. B. 3,36. C. 13,44. D. 8,96. Dng cho cu 14, 15: Chia 29,8 gam hn hp X gm Mg, Na, K v Ca thnh 2 phn bng nhau. Phn 1 tc dng hon ton vi dung dch HNO3 long thu c 1,568 lt kh N2 duy nht (ktc) v dung dch cha x gam mui (khng cha NH4NO3). Phn 2 tc dng hon ton vi oxi thu c y gam hn hp 4 oxit. Cu 14: Gi tr ca x l A. 73,20. B. 58,30. C. 66,98. D. 81,88. Cu 15: Gi tr ca y l A. 20,5. B. 35,4. C. 26,1. D. 41,0. Dng cho cu 16, 17, 18, 19: Dn hn hp X gm 0,1 mol C2H2, 0,1 mol C3H4 v 0,1 mol H2 qua ng cha Ni nung nng thu c hn hp kh Y gm 7 cht. t cht hon ton Y cn V lt kh O2 (ktc) thu c x gam CO2 v y gam H2O. Nu cho V lt kh O2 (ktc) tc dng ht vi 40 gam hn hp Mg v Ca th thu c a gam hn hp cht rn. Cu 16: Gi tr ca x l A. 13,2. B. 22,0. C. 17,6. D. 8,8. Cu 17: Gi tr ca y l A. 7,2. B. 5,4. C. 9,0. D. 10,8. Cu 18: Gi tr ca V l A. 10,08. B. 31,36. C. 15,68. D. 13,44. Cu 19: Gi tr ca a l A. 62,4. B. 51,2. C. 58,6. D. 73,4. Dng cho cu 20, 21, 22: Chia 47,1 gam hn hp X gm Mg, Al, Zn, Ni thnh 2 phn bng nhau. Phn 1 tc dng hon ton vi dung dch HNO3 va thu c 7,84 lt kh NO duy nht (ktc) v dung dch Y cha x gam mui (khng cha NH4NO3). Nu cho Y tc dng vi dung dch NaOH th lng kt ta ln nht thu c l y gam. Phn 2 tc dng hon ton vi dung dch HCl thu c V lt kh H2(ktc). Cu 20: Gi tr ca x l

3

A. 110,35. B. 45,25. C. 112,20. D. 88,65. Cu 21: Gi tr ca y l A. 47,35. B. 41,40. C. 29,50. D. 64,95. Cu 22: Gi tr ca V l A. 11,76. B. 23,52. C. 13,44. D. 15,68. Dng cho cu 23, 24: Cho hn hp X gm 0,2 mol Al v 0,2 mol Zn tc dng vi 500 ml dung dch Y gm Cu(NO 3)2 v AgNO3 n khi phn ng hon ton thu c 48,45 gam cht rn A gm 3 kim loi v dung dch B cha 2 mui. Cho A tc dng vi dung dch HCl d thu c 3,36 lt kh H2 (ktc). Coi th tch dung dch khng i Cu 23: Nng mol/lt ca Cu(NO3)2 trong Y l A. 0,6. B. 0,5. C. 0,4. D. 0,3. Cu 2 4 : Tng nng mol/lt ca mui trong dung dch B l A. 0,6. B. 0,5. C. 0,4. D. 0,3. Cu 25: Trong phn ng Fe3O4 + H2SO4c Fe2(SO4)3 + SO2 + H2O th H2SO4 ng vai tr A. l cht oxi ha. B. l cht kh. C. l cht oxi ha v mi trng. D. l cht kh v mi trng. Cu 26 (A-07): Cho tng cht Fe, FeO, Fe(OH)2, Fe3O4, Fe2O3, Fe(NO3)3, Fe(NO3)2, FeSO4, Fe2(SO4)3, FeCO3 ln lt phn ng vi HNO3 c nng. S lng phn ng thuc loi phn ng oxi ho - kh l. A. 8. B. 6. C. 5. D. 7. Cu 27 (A-07): Cho cc phn ng sau: a) FeO + HNO3 (c, nng) b) FeS + H2SO4 (c nng) c) Al2O3 + HNO3 (c, nng) d) Cu + dung dch FeCl3 e) CH3CHO + H2 (Ni, to) f) glucoz + AgNO3 trong dung dch NH3 g) C2H4 + Br2 h) glixerol + Cu(OH)2 Dy gm cc phn ng u thuc loi phn ng oxi ho - kh l A. a, b, c, d, e, h. B. a, b, d, e, f, g. C. a, b, d, e, f, h. D. a, b, c, d, e, g. Cu 28 (B-07): Khi cho Cu tc dng vi dung dch cha H2SO4 long v NaNO3 th vai tr ca NaNO3 trong phn ng l A. cht xc tc. B. mi trng. C. cht oxi ho. D. cht kh. Cu 29 (B-07): Trong phn ng t chy CuFeS2 to ra sn phm CuO, Fe2O3 v SO2 th mt phn t CuFeS2 s A. nhng 12e. B. nhn 13e. C. nhn 12e. D. nhng 13e. Cu 30: Trong phn ng FexOy + HNO3 N2 + Fe(NO3)3 + H2O th mt phn t FexOy s A. nhng (2y 3x) e B. nhn (3x 2y) e C. nhng (3x 2y) e D. nhn (2y 3x) e Cu 31: Trong phn ng trng gng ca HCHO th mi phn t HCHO s A. nhng 2e. B. nhn 2e. C. nhn 4e. D. nhng 4e. Bi t p nng cao Cu 1. Cho cc phn ng sau: a) FeO + HNO3 (c, nng) b) FeS + H2SO4 (c, nng) . c) Al2O3 + HNO3 (c, nng) d) Cu + dung dch FeCl3 . e) CH3CHO + H2 glucoz + AgNO3 trong dung dch NH3 ) f g) C2H4 + Br2 h) glixerol (glixerin) + Cu(OH)2 . Dy gm cc phn ng u thuc loi phn ng oxi ha - kh l: A. a, b, d, e, f, h. B. a, b, c, d, e, h. C. a, b, c, d, e, g. D. a, b, d, e, f, g. Cu 2. Cho tng cht: Fe, FeO, Fe(OH)2, Fe(OH)3, Fe3O4, Fe2O3, Fe(NO3)2, Fe(NO3)3, FeSO4, Fe2(SO4)3, FeCO3 ln lt phn ng vi HNO3 c, nng. S phn ng thuc loi phn ng oxi ho - kh l A. 5. B. 7. C. 8. D. 6. Cu 3. Cho cc phn ng: Ca(OH)2 + Cl2

CaOCl2

2H2S +

SO2

3S + 2H2O.

2NO2 + 2NaOH NaNO3 + NaNO2 + H2O 4KClO3 + SO2 3S + 2H2O. O3 O2 + O. S phn ng oxi ho kh l A. 3. B. 5. C. 2. D. 4. Cu 4. Tng h s (cc s nguyn, ti gin) ca tt c cc cht trong phng trnh phn ng gia Cu vi dung dch HNO3 c, nng l A. 11. B. 10. C. 8. D. 9. Cu 5. Cho phng trnh ho hc: Fe3O4 + HNO3 Fe(NO3)3 + NxOy + H2O Sau khi cn bng phng trnh ho hc trn vi h s ca cc cht l nhng s nguyn, ti gin th h s ca HNO3 l A. 45x - 18y. B. 46x - 18y. C. 13x - 9y. D. 23x - 9y. Cu 6. Trong phn ng t chy CuFeS2 to ra sn phm CuO, Fe2O3 v SO2 th mt phn t CuFeS2 s. A. nhn 13 electron. B. nhng 13 electron. C. nhng 12 electron. D. nhn 12 electron. Cu 7. Cho bit cc phn ng xy ra sau: 2FeBr2 + Br2 2FeBr3. 2NaBr + Cl2 2NaCl + Br2. Pht biu ng l: A. Tnh kh ca Cl- mnh hn ca Br -. B. Tnh kh ca Br- mnh hn ca Fe2+. C. Tnh oxi ha ca Br2 mnh hn ca Cl2. D. Tnh oxi ha ca Cl2 mnh hn ca Fe3+. Cu 8. Cho dy cc cht v ion: Zn, S, FeO, SO2, N2, HCl, Cu2+, Cl-. S cht v ion c c tnh oxi ha v tnh kh l A. 7. B. 4. C. 5. D. 6.

4

Cu 9. Cho dy cc cht v ion: Cl2, F2, SO2, Na+, Ca2+, Fe2+, Al3+, Mn2+, S2-, Cl-. S cht v ion trong dy u c tnh oxi ho v tnh kh l A. 3. B. 6. C. 4. D. 5. T c ph n ng v cn b ng ha h c L thuy t Cu 171. Cho cn bng ha hc: 2SO2 (k) + O2 (k) ng l: A. Cn bng chuyn dch theo chiu thun khi tng nhit . B. Cn bng chuyn dch theo chiu nghch khi gim nng O2. C. Cn bng chuyn dch theo chiu thun khi gim p sut h phn ng. D. Cn bng chuyn dch theo chiu nghch khi gim nng SO3. Cu 172. Cho cn bng (trong bnh kn) sau: CO (k) + H2O (k)

2SO3 (k); phn ng thun l phn ng ta nhit. Pht biu

CO2 (k)

+

H2 (k)

H < 0.

Trong cc yu t: (1) tng nhit ; (2) thm mt lng hi nc; (3) thm mt lng H2; (4) tng p sut chung ca h; (5) dng cht xc tc. Dy gm cc yu t u lm thay i cn bng ca h l: A. (1), (4), (5). B. (1), (2), (3). C. (1), (2), (4). D. (2), (3), (4).

Cu 173. Cho cn bng ho hc: N2 (k) + 3H2 (k) 2NH3 (k); phn ng thun l phn ng to nhit. Cn bng ho hc khng b chuyn dch khi. A. thay i p sut ca h. B. thay i nhit . Cu 174. Cho cc cn bng ho hc: C. thm cht xc tc Fe. D. thay i nng N2.

N2 (k) + 3H2 (k) 2SO2 (k) + O2 (k)

2NH3

(k)

(1)

H2 (k) + I2 (k)

2HI

(k)

(2).

2SO3 (k)(3)

2NO2 (k) N2O4 (k)(4). D. (2), (3), (4). 3H2 (k)

Khi thay i p sut nhng cn bng ha hc b chuyn dch l: A. (1), (2), (4). B. (1), (3), (4). C. (1), (2), (3). Cu 175. Cho cc cn bng sau: (1) 2SO2(k) + O2(k)

2SO3(k)

(2) N2 (k) + (4) 2HI (k)

2NH3 (k).

(3) CO2(k) + H2(k) CO(k) + H2O(k)

H2 (k) + I2 (k).

Khi thay i p sut, nhm gm cc cn bng ho hc u khng b chuyn dch l A. (1) v (3). B. (1) v (2). C. (2) v (4). D. (3) v (4). Cu 176. Cho cn bng sau trong bnh kn: 2NO2

N2O4.

(mu nu ) (khng mu). Bit khi h nhit ca bnh th mu nu nht dn. Phn ng thun c: A. H < 0, phn ng thu nhit. B. H < 0, phn ng to nhit. C. H > 0, phn ng to nhit. D. H > 0, phn ng thu nhit. Cu 177. Hng s cn bng ca phn ng xc nh ch ph thuc vo. A. nhit . B. nng . C. p sut. D. cht xc tc. Bi t p Cu 10. Cho cht xc tc MnO2 vo 100 ml dung dch H2O2, sau 60 giy thu c 33,6 ml kh O2 ( ktc). Tc trung bnh ca phn ng (tnh theo H2O2) trong 60 giy trn l A. 5,0.104 mol/(l.s). B. 2,5.104 mol/(l.s). C. 5,0.105 mol/(l.s). D. 5,0.103 mol/(l.s). Cu 11. Cho phng trnh ha hc ca phn ng tng hp amoniac.t N 2 (k) + 3H 2 (k) 2NH3 (k) . xto

Khi tng nng ca hiro ln 2 ln, tc phn ng thun: A. tng ln 8 ln. B. tng ln 2 ln. C. gim i 2 ln. D. tng ln 6 ln. Cu 12. Mt bnh phn ng c dung tch khng i, cha hn hp kh N2 v H2 vi nng tng ng l 0,3M v 0,7M. Sau khi phn ng tng hp NH3 t trng thi cn bng t 0 C, H2 chim 50% th tch hn hp thu c. Hng s cn bng KC t oC ca phn ng c gi tr l A. 3,125. B. 0,500. C. 0,609. D. 2,500. Cu 13. Cho cc cn bng sau:

(1) H 2 (k) + I2 (k) 2HI (k) 1 H 2 (k) + 1 I 2 (k) (3) HI (k) 2 2 (5) H 2 (k) + I2 (r) 2HI (k)

1 1 (2) H2 (k) + I2 (k) HI (k) 2 2 (4) 2HI (k) H2 (k) + I2 ( k) .

nhit xc nh, nu KC ca cn bng (1) bng 64 th KC bng 0,125 l ca cn bng.

5

A. (5).

B. (4).

C. (3).

D. (2).

Cu 1: Tc ca mt phn ng c dng:

v = k.C .Cx A

y (A, B l 2 cht khc nhau). Nu tng nng A ln 2 ln B

(nng B khng i) th tc phn ng tng 8 ln. Gi tr ca x l A. 3. B. 4. C. 6. D. 8. Cu 3: Khi tng thm 10OC, tc mt phn ng ho hc tng ln 2 ln. Vy khi tng nhit ca phn ng t 25OC ln 75OC th tc phn ng tng A. 5 ln. B. 10 ln. C. 16 ln. D. 32 ln. Cu 4: Khi tng thm 10OC, tc mt phn ng ho hc tng ln 3 ln. tc phn ng (ang tin hnh 30OC) tng 81 ln th cn phi tng nhit ln n A. 50OC. B. 60OC. C. 70OC. D. 80OC. Cu 6: Ngi ta cho N2 v H2 vo trong bnh kn dung tch khng i v thc hin phn ng: N2 + 3H2 2NH3. Sau mt thi gian, nng cc cht trong bnh nh sau: [N2] = 2M; [H2] = 3M; [NH3] = 2M. Nng mol/l ca N2 v H2 ban u ln lt l A. 3 v 6. B. 2 v 3. C. 4 v 8. D. 2 v 4. Cu 7: Xt phn ng sau nhit khng i: 2NO + O2 2NO2. Khi th tch bnh phn ng gim i mt na th tc phn ng A. tng 4 ln. B. gim 4 ln. C. tng 8 ln. D. gim 8 ln. Cu 8: Cho 6 gam, km ht vo cc ng dung dch H 2SO4 2M nhit thng. Bin i no sau y KHNG lm thay i tc phn ng? A. thay 6 gam km ht bng 6 gam km bt. B. tng nhit ln n 50OC. C. thay dung dch H2SO4 2M bng dung dch H2SO4 1M. D. tng th tch dung dch H2SO4 2M ln 2 ln. Cu 9: Cho phn ng: 2KClO3 (r) 2KCl(r) + 3O2 (k). Yu t KHNG nh hng n tc ca phn ng trn l A. kch thc ht KClO3. B. p sut. C. cht xc tc. D. nhit . Cu 10: Khi phn ng thun nghch trng thi cn bng th n A. khng xy ra na. B. vn tip tc xy ra. C. ch xy ra theo chiu thun. D. ch xy ra theo chiu nghch. Cu 11: Gi tr hng s cn bng KC ca phn ng thay i khi A. thay i nng cc cht. B. thay i nhit . C. thay i p sut. D. thm cht xc tc. Cu 12: Cc yu t nh hng n cn bng ho hc l A. nng , nhit v cht xc tc. B. nng , p sut v din tch b mt. C. nng , nhit v p sut. D. p sut, nhit v cht xc tc. Cu 13: Cho phn ng: Fe2O3 (r) + 3CO (k) 2Fe (r) + 3CO2 (k). Khi tng p sut ca phn ng ny th A. cn bng chuyn dch theo chiu thun. B. cn bng khng b chuyn dch. C. cn bng chuyn dch theo chiu nghch. D. phn ng dng li. Cu 14: Cho phn ng: N2 (k) + 3H2 (k) 2NH3 (k) H < 0. Khi gim nhit ca phn ng t 450OC xung n 25 OC th A. cn bng chuyn dch theo chiu thun. B. cn bng khng b chuyn dch. C. cn bng chuyn dch theo chiu nghch. D. phn ng dng li. Cu 15: Phn ng: 2SO2 + O2 2SO3 H < 0. Khi gim nhit v khi gim p sut th cn bng ca phn ng trn chuyn dch tng ng l A. thun v thun. B. thun v nghch. C. nghch v nghch. D.nghch v thun. Cu 16: Trn 1 mol H2 vi 1 mol I2 trong bnh kn dung tch 1 lt. Bit rng 410 O, hng s tc ca phn ng thun l 0,0659 v hng s tc ca phn ng nghch l 0,0017. Khi phn ng t ti trng thi cn bng 410 OC th nng ca HI l A. 2,95. B. 1,52. C. 1,47. D. 0,76. Cu 17: Cho phn ng sau mt nhit nht nh: N 2 + 3H3 2NH3. Nng (mol/l) lc ban u ca N2 v H2 ln lt l 0,21 v 2,6. Bit KC ca phn ng l 2. Nng cn bng (mol/l) ca N2, H2, NH3 tng ng l A. 0,08; 1 v 0,4. B. 0,01; 2 v 0,4. C. 0,02; 1 v 0,2. D. 0,001; 2 v 0,04. Cu 18: Cho phn ng: CO (k) + H2O (k) CO2 (k) + H2 (k) Bit KC ca phn ng l 1 v nng ban u ca CO v H 2O tng ng l 0,1 mol/l v 0,4 mol/l. Nng cn bng (mol/l) ca CO v H2O tng ng l A. 0,08 v 0,08. B. 0,02 v 0,08. C. 0,02 v 0,32. D. 0,05 v 0,35.

6

Cu 19: Mt bnh kn dung tch khng i V lt cha NH 3 0OC v 1atm vi nng 1mol/l. Nung bnh n 546 OC v NH3 b phn hu theo phn ng: 2NH 3 N2 + 3H2. Khi phn ng t ti trng thi cn bng, p sut kh trong bnh l 3,3atm. nhit ny nng cn bng ca NH3 (mol/l) v gi tr ca KC l A. 0,1; 2,01.10-3. B. 0,9; 2,08.10-4. C. 0,15; 3,02.10-4. D. 0,05; 3,27.10-3. Cu 20: Cho phng trnh phn ng: 2A(k) + B (k) 2X (k) + 2Y(k). Ngi ta trn 4 cht, mi cht 1 mol vo bnh kn dung tch 2 lt (khng i). Khi cn bng, lng cht X l 1,6 mol. Hng s cn bng ca phn ng ny l A. 58,51 B. 33,44. C. 29,26 D. 40,96. Cu 21: Cho phn ng: CO + Cl2 COCl2 thc hin trong bnh kn dung tch 1 lt nhit khng i. Khi cn bng [CO] = 0,02; [Cl2] = 0,01; [COCl 2] = 0,02. Bm thm vo bnh 1,42gam Cl2. Nng mol/l ca CO; Cl2 v COCl2 trng thi cn bng mi ln lt l A. 0,013; 0,023 v 0,027. B. 0,014; 0,024 v 0,026. C. 0,015; 0,025 v 0,025. D. 0,016; 0,026 v 0,024. Cu 22 (A-07): Khi tin hnh este ha gia 1 mol CH 3COOH vi 1 mol C2H5OH th thu c 2/3 mol este. t hiu sut cc i l 90% (tnh theo axit) khi tin hnh este ha 1 mol axit axetic cn s mol ru etylic l (cc phn ng este ho thc hin cng nhit ) A. 0,342. B. 2,925. C. 0,456. D. 2,412. 2NO2. Cho 18,4 gam N2O4 vo bnh chn khng dung tch 5,9 lt 27 OC, khi t n trng Cu 23: Cho cn bng: N2O4 thi cn bng, p sut l 1 atm. Hng s cn bng KC nhit ny l A. 0,040. B. 0,007. C. 0,500. D. 0,008. Cu 24: Khi ho tan SO2 vo nc c cn bng sau: SO2 + H2O HSO3- + H+. Khi cho thm NaOH v khi cho thm H2SO4 long vo dung dch trn th cn bng s chuyn dch tng ng l A. thun v thun. B. thun v nghch. C. nghch v thun. D. nghch v nghch. ================= CHUYN 3: NGUYN T PHI KIM V H P CH T

L thuy t Cu 201. Trong phng th nghim, ngi ta thng iu ch clo bng cch. A. in phn dung dch NaCl c mng ngn. B. cho dung dch HCl c tc dng vi MnO2, un nng. C. in phn nng chy NaCl. D. cho F2 y Cl2 ra khi dung dch NaCl. Cu 202. Trong phng th nghim, ngi ta iu ch oxi bng cch. A. nhit phn KClO3 c xc tc MnO2. B. nhit phn Cu(NO3)2. C. in phn nc. D. chng ct phn on khng kh lng. Cu 203. ng dng no sau y khng phi ca ozon? A. iu ch oxi trong phng th nghim. B. Ty trng tinh bt, du n. C. St trng nc sinh hot. D. Cha su rng. Cu 204. Trong phng th nghim, iu ch mt lng nh kh X tinh khit, ngi ta un nng dung dch amoni nitrit bo ho. Kh X l A. N2O. B. N2. C. NO2. D. NO. Cu 205. Trong phng th nghim, ngi ta thng iu ch HNO3 t. A. NaNO3 v H2SO4 c. B. NaNO2 v H2SO4 c. C. NH3 v O2. D. NaNO3 v HCl c. Cu 206. Cho Cu v dung dch H2SO4 long tc dng vi cht X (mt loi phn bn ha hc), thy thot ra kh khng mu ha nu trong khng kh. Mt khc, khi X tc dng vi dung dch NaOH th c kh mi khai thot ra. Cht X l A. amophot. B. ure. C. natri nitrat. D. amoni nitrat. Cu 207. Phn bn no sau y lm tng chua ca t? A. NaNO3. B. NH4NO3. C. KCl. D. K2CO3. Cu 208. Thnh phn chnh ca qung photphorit l A. Ca(H2PO4)2. B. CaHPO4. C. NH4H2PO4. D. Ca3(PO4)2. Cu 209. Pht biu no sau y l ng? A. Phn ln cung cp nit ho hp cho cy di dng ion nitrat (NO3-) v ion amoni (NH4+). B. Amophot l hn hp cc mui (NH4)2HPO4 v KNO3. C. Phn hn hp cha nit, photpho, kali c gi chung l phn NPK. D. Phn ur c cng thc l (NH4)2CO3. Cu 210. Phn bn nitrophotka (NPK) l hn hp ca. A. (NH4)2HPO4 v KNO3. B. (NH4)2HPO4 v NaNO3. C. (NH4)3PO4 v KNO3. D. NH4H2PO4 v KNO3. Cu 211. Cho cc phn ng sau: (1) Cu(NO3 )2 t t (4) NH3 + Cl2 . 0

0

(2) NH4 NO 2 t . t (5) NH 4 Cl 0

0

850 (3) NH3 + O 2 C,Pt t (6) NH3 + CuO . 0

0

Cc phn ng u to kh N2 l: A. (1), (2), (5). B. (2), (4), (6). Cu 212. Cho cc phn ng sau:

C. (1), (3), (4).

D. (3), (5), (6).

7

4HCl + MnO2

t MnCl2 + Cl2 + 2H2O. t 2KCl + 2CrCl3 + 3Cl2 + 7H2O. o

o

2HCl + Fe FeCl2 + H2. 6HCl + 2Al 2AlCl3 + 3H2.

14HCl + K2Cr2O7

16HCl + 2KMnO 4 2KCl + 2MnCl 2 + 5Cl2 + 8H2O. S phn ng trong HCl th hin tnh oxi ha l A. 3. B. 1. C. 2. D. 4. Cu 213. Cho cc phn ng sau: (a) 4HCl + PbO2 PbCl2 + Cl2 + 2H2O. (b) HCl + NH4HCO3 NH4Cl + CO2 + H2O. (c) 2HCl + 2HNO3 2NO2 + Cl2 + 2H2O. (d) 2HCl + Zn ZnCl2 + H2. S phn ng trong HCl th hin tnh kh l A. 2. B. 3. C. 4. D. 1. Cu 214. Cho cc phn ng : (1)O3 + dung dch KI (3) MnO2 + HCl c Cc phn ng to ra n cht l : A. (1), (2), (3). B. (1), (2), (4) Cu 215. Phn ng nhit phn khng ng l : A. 2KNO3 C. NH4NO2t 2KNO2 + O2. t N2 + 2H2O. t 2SO2 + 2H2O o 0 0

(2) F2 + H2O

t

0

t

0

(4) Cl2 + dung dch H2S D. (2), (3), (4).0

C. (1), (3), (4). B. NaHCO3 D. NH4Cl

t NaOH + CO2. 0

t NH3 + HCl .

Cu 216. Trng hp khng xy ra phn ng ha hc l A. 3O2 + 2H2S .B. FeCl2 + H2S FeS + 2HCl. C. O3 + 2KI + H2O O2 + 2KOH + I2. D. Cl2 + 2NaOH NaCl + NaClO + H2O. Cu 217. Dy gm cc cht u tc dng c vi dung dch HCl long l: A. AgNO3, (NH4)2CO3, CuS. B. FeS, BaSO4, KOH. C. KNO3, CaCO3, Fe(OH)3. D. Mg(HCO3)2, HCOONa, CuO. Cu 218. Nu cho 1 mol mi cht: CaOCl 2, KMnO4, K2Cr2O7, MnO2 ln lt phn ng vi lng d dung dch HCl c, cht to ra lng kh Cl2 nhiu nht l A. CaOCl 2. B. K2Cr2O7. C. MnO2. D. KMnO4. Cu 219. Khi nhit phn hon ton 100 gam mi cht sau: KClO3 (xc tc MnO2), KMnO4, KNO3 v AgNO3. Cht to ra lng O2 ln nht l A. KMnO4. B. KNO3. C. KClO3. D. AgNO3. Cu 220. Cht kh X tan trong nc to ra mt dung dch lm chuyn mu qu tm thnh v c th c dng lm cht ty mu. Kh X l A. CO2. B. O3. C. SO2. D. NH3. Cu 221. SO2 lun th hin tnh kh trong cc phn ng vi. A. O2, nc Br2, dung dch KMnO4. B. dung dch NaOH, O2, dung dch KMnO4. C. dung dch KOH, CaO, nc Br2. D. H2S, O2, nc Br2. Cu 222. Trn 5,6 gam bt st vi 2,4 gam bt lu hunh ri nung nng (trong iu kin khng c khng kh), thu c hn hp rn M. Cho M tc dng vi lng d dung dch HCl, gii phng hn hp kh X v cn li mt phn khng tan G. t chy hon ton X v G cn va V lt kh O2 (ktc). Gi tr ca V l A. 2,80. B. 3,08. C. 3,36. D. 4,48. Cu 223. Cho 13,44 lt kh clo ( ktc) i qua 2,5 lt dung dch KOH 100oC. Sau khi phn ng xy ra hon ton, thu c 37,25 gam KCl. Dung dch KOH trn c nng l A. 0,24M. B. 0,48M. C. 0,2M. D. 0,4M. Cu 224. Cho dung dch cha 6,03 gam hn hp gm hai mui NaX v NaY (X, Y l hai nguyn t c trong t nhin, hai chu k lin tip thuc nhm VIIA, s hiu nguyn t ZX < ZY) vo dung dch AgNO3 (d), thu c 8,61 gam kt ta. Phn trm khi lng ca NaX trong hn hp ban u l A. 47,2%. B. 58,2%. C. 52,8%. D. 41,8%. Axit Nitric v mu i Nitrat trong mi tr ng axit Cu 225. Khi cho Cu tc dng vi dung dch cha H2SO4 long v NaNO3, vai tr ca NaNO3 trong phn ng l A. cht oxi ho. B. mi trng. C. cht kh. D. cht xc tc. Cu 226. Thc hin hai th nghim: 1) Cho 3,84 gam Cu phn ng vi 80 ml dung dch HNO3 1M thot ra V1 lt NO. 2) Cho 3,84 gam Cu phn ng vi 80 ml dung dch cha HNO3 1M v H2SO4 0,5 M thot ra V2 lt NO. Bit NO l sn phm kh duy nht, cc th tch kh o cng iu kin. Quan h gia V1 v V2 l A. V2 = 2V1. B. V2 = 2,5V1. C. V2 = V1. D. V2 = 1,5V1. Cu 227. Cho 3,2 gam bt Cu tc dng vi 100 ml dung dch hn hp gm HNO3 0,8M v H2SO4 0,2M. Sau khi cc phn ng xy ra hon ton, sinh ra V lt kh NO (sn phm kh duy nht, ktc). Gi tr ca V l A. 1,792. B. 0,448. C. 0,746. D. 0,672. Cu 228. Cho m gam bt Fe vo 800 ml dung dch hn hp gm Cu(NO3)2 0,2M v H2SO4 0,25M. Sau khi cc phn ng xy ra hon ton, thu c 0,6m gam hn hp bt kim loi v V lt kh NO (sn phm kh duy nht, ktc). Gi tr ca m v V ln lt l A. 17,8 v 4,48. B. 17,8 v 2,24. C. 10,8 v 4,48. D. 10,8 v 2,24.

8

Cu 229. Cho hn hp gm 1,12 gam Fe v 1,92 gam Cu vo 400 ml dung dch cha hn hp gm H2SO4 0,5M v NaNO3 0,2M. Sau khi cc phn ng xy ra hon ton, thu c dung dch X v kh NO (sn phm kh duy nht). Cho V ml dung dch NaOH 1M vo dung dch X th lng kt ta thu c l ln nht. Gi tr ti thiu ca V l A. 240. B. 400. C. 120. D. 360. Cu 230. Nung 6,58 gam Cu(NO3)2 trong bnh kn khng cha khng kh, sau mt thi gian thu c 4,96 gam cht rn v hn hp kh X. Hp th hon ton X vo nc c 300 ml dung dch Y. Dung dch Y c pH bng. A. 3. B. 2. C. 1. D. 4. Cu 231. Nhit phn hon ton 34,65 gam hn hp gm KNO3 v Cu(NO3)2, thu c hn hp kh X (t khi ca X so vi kh hiro bng 18,8). Khi lng Cu(NO3)2 trong hn hp ban u l A. 11,28 gam. B. 8,60 gam. C. 20,50 gam. D. 9,40 gam. Cu 232. Ho tan hon ton mt lng bt Zn vo mt dung dch axit X. Sau phn ng thu c dung dch Y v kh Z. Nh t t dung dch NaOH (d) vo Y, un nng thu c kh khng mu T. Axit X l A. HNO3. B. H2SO4 long. C. H2SO4 c. D. H3PO4. Cu 233. Cho 2,16 gam Mg tc dng vi dung dch HNO3 (d). Sau khi phn ng xy ra hon ton thu c 0,896 lt kh NO ( ktc) v dung dch X. Khi lng mui khan thu c khi lm bay hi dung dch X l A. 6,52 gam. B. 13,92 gam. C. 8,88 gam. D. 13,32 gam. Cu 234. Ho tan hon ton 12,42 gam Al bng dung dch HNO3 long (d), thu c dung dch X v 1,344 lt ( ktc) hn hp kh Y gm hai kh l N2O v N2. T khi ca hn hp kh Y so vi kh H2 l 18. C cn dung dch X, thu c m gam cht rn khan. Gi tr ca m l A. 106,38. B. 38,34. C. 97,98. D. 34,08. CHUYN 4: S I N LY Cu 7: Phng trnh phn li ca axt axetic l: CH3COOH CH3COO- + H+ Ka. Bit [CH3COOH] = 0,5M v trng thi cn bng [H+] = 2,9.10-3M. Gi tr ca Ka l A. 1,7.10-5. B. 8,4.10-5 . C. 5,95.10-4. D. 3,4.10-5. Cu 10: Thm t t tng git H2SO4 vo dung dch Ba(OH)2 n d th dn in ca h s bin i nh sau: A. tng dn. B. gim dn. C. lc u gim, sau tng. D. lc u tng, sau gim. Cu 11: C 2 dung dch X v Y, mi dung dch ch cha 2 cation v 2 anion trong s cc ion vi s mol nh sau: K + (0,15); Mg2+ (0,10); NH4+ (0,25); H+ (0,20); Cl- (0,10); SO42- (0,075); NO3- (0,25); CO32- (0,15). Cc ion trong X v Y l A. X cha (K+, NH4+, CO32-, SO42-); Y cha (Mg2+, H+, NO3-, Cl-). B. X cha (K+, NH4+, CO32-, NO3-); Y cha (Mg2+, H+, SO42-, Cl-). C. X cha (K+, NH4+, CO32-, Cl-); Y cha (Mg2+, H+, SO42-, NO3-). D. X cha (H+, NH4+, CO32-, Cl-); Y cha (Mg2+, K+, SO42-, NO3-). Cu 12: Mt dung dch cha a mol Na+, b mol Ca2+, c mol HCO3- v d mol NO3-. Biu thc lin h gia a, b, c, d v cng thc tng s gam mui trong dung dch ln lt l A. a + 2b = c + d v 23a + 40b + 61c + 62d. B. a + b = c + d v 23a + 40b + 61c + 62d. C. a + b = c + d v 23a + 40b - 61c - 62d. D. a + 2b = c + d v 23a + 40b - 61c - 62d. Cu 17: Chia dung dch X gm CuSO 4 v Al(NO3)3 thnh 2 phn bng nhau. Phn 1 cho tc dng vi dung dch BaCl 2 d thu c 6,99 gam kt ta. Phn 2 cho tc dng vi dung dch NaOH d, ri ly kt ta nung n khi lng khng i thu c m gam cht rn. Gi tr ca m l A. 2,4. B. 3,2. C. 4,4. D. 12,6. Cu 20: Ion CO32 khng tc dng vi cc ion thuc dy no sau y? A. NH4+, K+, Na+. B. H+, NH4+, K+, Na+. 2+ 2+ + C. Ca , Mg , Na . D. Ba2+, Cu2+, NH4+, K+. Cu 21: Dy no cho di y gm cc ion cng tn ti trong mt dung dch A. Na+, NH4+, Al3+, SO42-, OH-, Cl-. B. Ca2+, K+, Cu2+, NO3-, OH-, Cl-. C. Ag+, Fe3+, H+, Br-, CO32-, + 2+ + 2NO3 . D. Na , Mg , NH4 , SO4 , Cl , NO3 . Cu 22: Hin tng to thnh nh trong cc hang ng l do phn ng A. CaCO3 + CO2 + H2O Ca(HCO3)2. B. Ca(HCO3)2 CaCO3 + CO2 + H2O. C. CaO + CO2 CaCO3. D. CaCO3 CaO + CO2. Cu 33: Dung dch axit H2SO4 c pH = 4. Nng mol/l ca H2SO4 trong dung dch l A. 2.10-4M. B. 1.10-4M. C. 5.10-5M. D. 2.10-5M. S i n li: 2 + 0,5. Cu 178. Dung dch HCl v dung dch CH3COOH c cng nng mol/l, pH ca hai dung dch tng ng l x v y. Quan h gia x v y l (gi thit, c 100 phn t CH3COOH th c 1 phn t in li). A. y = 2x. B. y = x + 2. C. y = x - 2. D. y = 100x. Cu 179. Cho dung dch X cha hn hp gm CH3COOH 0,1M v CH3COONa 0,1M. Bit 25 oC, Ka ca CH3COOH l 1,75.10-5 v b qua s phn li ca nc. Gi tr pH ca dung dch X 25 oC l A. 2,88. B. 4,76. C. 1,00. D. 4,24. Cu 180. Cho dy cc cht: KAl(SO4)2.12H2O, C2H5OH, C12H22O11 (saccaroz), CH3COOH, Ca(OH)2, CH3COONH4. S cht in li l

9

A. 5. B. 4. C. 2. D. 3. Cu 181. Cho dy cc cht: Ca(HCO3)2, NH4Cl, (NH4)2CO3, ZnSO4, Al(OH)3, Zn(OH)2. S cht trong dy c tnh cht lng tnh l A. 3. B. 5. C. 4. D. 2. Cu 182. Cho dy cc cht: Cr(OH)3, Al2(SO4)3, Mg(OH)2, Zn(OH)2, MgO, CrO3. S cht trong dyc tnh cht lng tnh l A. 4. B. 5. C. 3. D. 2. Cu 183. Cc hp cht trong dy cht no di y u c tnh lng tnh? A. Cr(OH)3, Fe(OH)2, Mg(OH)2 B. Cr(OH)3, Zn(OH)2, Mg(OH)2 C. Cr(OH)3, Pb(OH)2, Mg(OH)2. D. Cr(OH)3, Zn(OH)2, Pb(OH)2. Cu 184. Cho cc cht: Al, Al2O3, Al2(SO4)3, Zn(OH)2, NaHS, K2SO3, (NH4)2CO3. S cht u phn ng c vi dung dch HCl, dung dch NaOH l A. 5. B. 7. C. 4. D. 6. Cu 185. Dy gm cc cht va tan trong dung dch HCl, va tan trong dung dch NaOH l: A. NaHCO3, MgO, Ca(HCO3)2. B. NaHCO3, ZnO, Mg(OH)2. C. Mg(OH)2, Al2O3, Ca(HCO3)2. D. NaHCO3, Ca(HCO3)2, Al2O3. Cu 186. Trong s cc dung dch: Na2CO3, KCl, CH3COONa, NH4Cl, NaHSO4, C6H5ONa, nhng dung dch c pH > 7 l A. KCl, C6H5ONa, CH3COONa. B. NH4Cl, CH3COONa, NaHSO4. C. Na2CO3, NH4Cl, KCl. D. Na2CO3, C6H5ONa, CH3COONa. Cu 187. Cho cc dung dch c cng nng : Na2CO3 (1), H2SO4 (2), HCl (3), KNO3 (4). Gi tr pH ca cc dung dch c sp xp theo chiu tng t tri sang phi l: A. (2), (3), (4), (1). B. (1), (2), (3), (4). C. (3), (2), (4), (1). D. (4), (1), (2), (3). - H n h p axit td h n h p baz . Pt ion thu g n. Bt i n tch. Cu 188. Cho 4 phn ng: (1) Fe + 2HCl FeCl2 + H2. (2) 2NaOH + (NH4)2SO4 Na2SO4 + 2NH3 + 2H2O. (3) BaCl2 + Na2CO3 BaCO3 + 2NaCl. (4) 2NH3 + 2H2O + FeSO4 Fe(OH)2 + (NH4)2SO4. Cc phn ng thuc loi phn ng axit - baz l A. (2), (4). B. (1), (2). C. (3), (4).

D. (2), (3).

Cu 189. Cho cc phn ng ha hc sau: . (3) Na2SO4 + BaCl2 (4) H2SO4 + BaSO3 . (1) (NH4)2SO4 + BaCl2 (2) CuSO4 + Ba(NO3)2 (5) (NH4)2SO4 + Ba(OH)2 (6) Fe2(SO4)3 + Ba(NO3)2 . Cc phn ng u c cng mt phng trnh ion rt gn l: A. (1), (2), (3), (6). B. (3), (4), (5), (6). C. (1), (3), (5), (6). D. (2), (3), (4), (6). Cu 190. Trn ln V ml dung dch NaOH 0,01M vi V ml dung dch HCl 0,03 M c 2V ml dung dch Y. Dung dch Y c pH l A. 3. B. 1. C. 2. D. 4. Cu 191. Trn 100 ml dung dch (gm Ba(OH)2 0,1M v NaOH 0,1M) vi 400 ml dung dch (gm H2SO4 0,0375M v HCl 0,0125M), thu c dung dch X. Gi tr pH ca dung dch X l A. 2. B. 6. C. 1. D. 7. Cu 192. Trn 100 ml dung dch hn hp gm H2SO4 0,05M v HCl 0,1M vi 100 ml dung dch hn hp gm NaOH 0,2M v Ba(OH)2 0,1M, thu c dung dch X. Dung dch X c pH l A. 1,0. B. 12,8. C. 1,2. D. 13,0. Cu 193. Trn 100 ml dung dch c pH = 1 gm HCl v HNO3 vi 100 ml dung dch NaOH nng a (mol/l) thu c 200 ml dung dch c pH = 12. Gi tr ca a l A. 0,12. B. 0,15. C. 0,03. D. 0,30. Cu 194. Cho dung dch cha 0,1 mol (NH4)2CO3 tc dng vi dung dch cha 34,2 gam Ba(OH)2. Sau phn ng thu c m gam kt ta. Gi tr ca m l A. 17,1. B. 19,7. C. 15,5. D. 39,4. Cu 195. Mt dung dch cha 0,02 mol Cu2+, 0,03 mol K+, x mol Cl- v y mol

SO 2- . Tng khi lng cc mui tan c 4

trong dung dch l 5,435 gam. Gi tr ca x v y ln lt l: A. 0,01 v 0,03. B. 0,03 v 0,02. C. 0,05 v 0,01. D. 0,02 v 0,05. Cu 196. Ho tan hon ton hn hp gm 0,12 mol FeS2 v a mol Cu2S vo axit HNO3 (va ), thu c dung dch X (ch cha hai mui sunfat) v kh duy nht NO. Gi tr ca a l A. 0,075. B. 0,12. C. 0,06. D. 0,04. Cu 197. Hn hp X cha Na2O, NH4Cl, NaHCO3 v BaCl2 c s mol mi cht u bng nhau. Cho hn hp X vo H2O (d), un nng, dung dch thu c cha. A. NaCl, NaHCO3, NH4Cl, BaCl2. B. NaCl. C. NaCl, NaOH. D. NaCl, NaOH, BaCl2. Cu 198. Trong cc dung dch: HNO3, NaCl, Na2SO4, Ca(OH)2, KHSO4, Mg(NO3)2, dy gm cc cht u tc dng c vi dung dch Ba(HCO3)2 l: A. HNO3, Ca(OH)2, KHSO4, Mg(NO3)2. B. NaCl, Na2SO4, Ca(OH)2.

10

C. HNO3, Ca(OH)2, KHSO4, Na2SO4.

D. HNO3, NaCl, Na2SO4.

Cu 199. Dung dch X cha cc ion: Fe3+, SO42-, NH4+, Cl-. Chia dung dch X thnh hai phn bng nhau: - Phn mt tc dng vi lng d dung dch NaOH, un nng thu c 0,672 lt kh ( ktc) v 1,07 gam kt ta;. - Phn hai tc dng vi lng d dung dch BaCl2, thu c 4,66 gam kt ta. Tng khi lng cc mui khan thu c khi c cn dung dch X l (qu trnh c cn ch c nc bay hi). A. 7,04 gam. B. 3,73 gam. C. 3,52 gam. D. 7,46 gam. Cu 200. Khi ha tan hiroxit kim loi M(OH)2 bng mt lng va dung dch H2SO4 20% thu c dung dch mui trung ho c nng 27,21%. Kim loi M l A. Fe. B. Mg. C. Zn. D. Cu. CHUYN 5: KIM LO I V H P CH T I. CC D NG BI T P KIM LO I D NG 1: KIM LO I TC D NG V I AXIT Cu 1. Cho 3,68 gam hn hp gm Al v Zn tc dng vi mt lng va dung dch H2SO4 10 %, thu c 2,24 lt kh H2 ( ktc). Khi lng dung dch thu c sau phn ng l: A. 101,68 gam B. 88,20 gam C. 101,48 gam D. 97,80 gam Cu 2: Ho tan hon ton 14,6 gam hn hp X gm Al v Sn bng dung dch HCl (d), thu c 5,6 lt kh H2 ( ktc). Th tch kh O2 ( ktc) cn phn ng hon ton vi 14,6 gam hn hp X l: A. 2,80 lt B. 1,68 lt C. 4,48 lt D. 3,92 lt Cu 3: Cho 7,68 gam hn hp X gm Mg v Al vo 400 ml dung dch Y gm HCl 1M v H2SO4 0,5M. Sau khi phn ng xy ra hon ton thu c 8,512 lt kh ( ktc). Bit trong dung dch, cc axit phn li hon ton thnh cc ion. Phn trm v khi lng ca Al trong X l: A. 56,25 % B. 49,22 % C. 50,78 % D. 43,75 % Cu 4: Cho 0,10 mol Ba vo dung dch cha 0,10 mol CuSO4 v 0,12 mol HCl. Sau khi cc phn ng xy ra hon ton, lc ly kt ta nung nhit cao n khi lng khng i thu c m gam cht rn. Gi tr ca m l: A. 23,3 gam B. 26,5 gam C. 24,9 gam D. 25,2 gam Cu 5: Th tch dung dch HNO3 1M (long) t nht cn dng ho tan hon ton 18 gam hn hp gm Fe v Cu trn theo t l mol 1 : 1 l: (bit phn ng to cht kh duy nht l NO) A. 1,0 lt B. 0,6 lt C. 0,8 lt D. 1,2 lt Cu 6: Ha tan 9,6 gam Cu vo 180 ml dung dch hn hp HNO3 1M v H2SO4 0,5M, kt thc phn ng thu c V lt ( ktc) kh khng mu duy nht thot ra, ha nu ngoi khng kh. Gi tr ca V l: A. 1,344 lt B. 4,032 lt C. 2,016 lt D. 1,008 lt Cu 7: Cho hn hp gm 1,12 gam Fe v 1,92 gam Cu vo 400 ml dung dch cha hn hp gm H2SO4 0,5M v NaNO3 0,2M. Sau khi cc phn ng xy ra hon ton, thu c dung dch X v kh NO (sn phm kh duy nht). Cho V ml dung dch NaOH 1M vo dung dch X th lng kt ta thu c l ln nht. Gi tr ti thiu ca V l: A. 360 ml B. 240 ml C. 400 ml D. 120 ml Cu 8. Cho 3,87 gam hn hp Al v Mg vo 200 ml dung dch cha 2 axit HCl 1M v H2SO4 0,5M thu c dung dch B v 4,368 lt H2( ktc).Khi lng ca Al v Mg ln lt l : A. 2,43 v 1,44 gam B. 2,12 v 1,75 gam C . 2,45 v 1,42 gam D. 3,12 v 0,75 gam Cu 9: Ha tan hon ton 100 gam hn hp X gm Fe, Cu , Ag trong dung dch HNO3 (d). Kt thc phn ng thu c 13,44 lt hn hp kh Y gm NO2, NO, N2O theo t l s mol tng ng l 3 : 2 : 1 v dung dch Z (khng cha mui NH4NO3). C cn dung dch Z thu c m gam mui khan. Gi tr ca m v s mol HNO3 phn ng ln lt l: A. 205,4 gam v 2,5 mol B. 199,2 gam v 2,4 mol C. 205,4 gam v 2,4 mol D. 199,2 gam v 2,5 mol Cu 10: Cho 6,72 gam Fe vo 400 ml dung dch HNO3 1M, n khi phn ng xy ra hon ton, thu c kh NO (sn phm kh duy nht) v dung dch X. Dung dch X c th ho tan ti a m gam Cu. Gi tr ca m l: A. 1,92 gam B. 3,20 gam C. 0,64 gam D. 3,84 gam Cu 11: Ho tan hon ton 12,42 gam Al bng dung dch HNO3 long (d), thu c dung dch X v 1,344 lt ( ktc) hn hp kh Y gm hai kh l N2O v N2. T khi ca hn hp kh Y so vi kh H2 l 18. C cn dung dch X, thu c m gam cht rn khan. Gi tr ca m l: A. 38,34 gam B. 34,08 gam C. 106,38 gam D. 97,98 gam

kim loi tan hon ton trong dung dch H2SO4 long, d thu c 0,672 lt kh H2 (ktc). Khi lng hn hp mui sunfat khan thu c lCu 12. Cho 1,04 gam hn hp hai

A. 3,92 gam. B. 1,96 gam. C. 3,52 gam. D. 5,88 gam Cu 13 Ho tan ht 7,8 gam hn hp Al, Mg trong dung dch HCl, thu c V lt kh H2 ( O0C v 2 atm) ng thi dung dch sau phn ng c khi lng tng thm 7 gam. 1.Gi tr ca V l : A. 2,24 lt B. 3,36 lt C. 4,48 lt D. 6,72 lt 2. Khi lng 2 kim loi Al v Mg ln lt l : A. 5,4 v 2,4 gam B. 6,6 v 1,2 gam C. 5, 2 v 2,6 gam D. 6,2 v 1,6 gam Cu 14 Ho tan ht 10,4 gam hn hp Mg, Fe bng 400 gam dung dch HCl 7,3% thu c 6,72 lt H2(ktc).Nng phn trm cc cht trong dung dch sau phn ng l : A. 2,23 % ; 3,2 % ; 4,46 % B. 4,64 % ; 3,1 % ; 1,78 % C. 3,12 % ; 5,13% ; 4,45 % D. 3,1% ; 4,46 % ; 2,13 %

11

Cu 15. Ho tan ht m gam hn hp Mg, MgCO3 trong dung dch HCl 2M, thu c 4,48 lt hn hp kh A (ktc). T khi ca A so vi H2 l 11,5. Gi tr ca m l : A. 10,2 gam B. 10,4 gam C. 10,6 gam D. 10,8 gam Cu 16. Cho 37,2 gam hn hp gm Zn v Fe tc dng vi 2 lt dung dch H2SO40,5M ti phn ng hon ton. Th tch dung dch NaOH 1 M cn cho vo dd sau phn ng c kt ta ln nht l : A. 2 lt B. 3 lt C. 4 lt D. 5 lt Cu 17. Cho 19,2 gam Cu vo 500 ml dung dch NaNO3 1M, sau thm 500ml dung dch HCl 2M thu c kh NO v dung dch A. 1.Th tch kh NO (ktc) l : A. 2,24 lt B. 3,36 lt C. 4,48 lt D. 6,72 lt 2. Th tch dd NaOH 0,2 M kt ta ht Cu 2+ trong dung dch A l : A. 1 lt B. 2 lt C. 3 lt D. 4 lt I HC 2008 - KHI A 18: Cho 11,36 gam hn hp gm Fe, FeO, Fe2O3 v Fe3O4 phn ng ht vi dung dch HNO3 long (d), thu c 1,344 lt kh NO (sn phm kh duy nht, ktc) v dung dch X. C cn dung dch X thu c m gam mui khan. Gi tr ca m l A. 38,72. B. 35,50. C. 49,09. D. 34,36. 19: Cho 3,2 gam bt Cu tc dng vi 100 ml dung dch hn hp gm HNO3 0,8M v H2SO4 0,2M. Sau khi cc phn ng xy ra hon ton, sinh ra V lt kh NO (sn phm kh duy nht, ktc).Gi tr ca V l A. 0,746. B. 0,448. C. 1,792. D. 0,672 I HC 2008 - KHI B 20: Cho 2,16 gam Mg tc dng vi dung dch HNO 3 (d). Sau khi phn ng xy ra hon ton thu c 0,896 lt kh NO ( ktc) v dung dch X. Khi lng mui khan thu c khi lm bay hi dung dch X l A. 13,32 gam. B. 6,52 gam. C. 8,88 gam. D. 13,92 gam. 21: Cho m gam hn hp X gm Al, Cu vo dung dch HCl (d), sau khi kt thc phn ng sinh ra 3,36 lt kh ( ktc). Nu cho m gam hn hp X trn vo lng d axit nitric (c ngui), sau khi kt thc phn ng sinh ra 6,72 lt kh NO 2 (sn phm kh duy nht, ktc). Gi tr ca m l A. 15,6. B. 11,5. C. 10,5. D. 12,3. 22: Th tch dung dch HNO 3 1M (long) t nht cn dng ha tan hon ton mt hn hp gm 0,15 mol Fe v 0,15 mol Cu l (bit phn ng to cht kh duy nht l NO) A. 0,6 lt. B. 1,2 lt. C. 0,8 lt. D. 1,0 lt. I HC 2009 - KHI A 23: Cho 6,72 gam Fe vo 400 ml dung dch HNO 3 1M, n khi phn ng xy ra hon ton, thu c kh NO (sn phm kh duy nht) v dung dch X. Dung dch X c th ho tan ti a m gam Cu. Gi tr ca m l A. 3,84. B. 3,20. C. 1,92. D. 0,64. 24: 3,024 gam mt kim loi M tan ht trong dung dch HNO3 long, thu c 940,8 ml kh NxOy (sn phm kh duy nht, ktc) c t khi i vi H2 bng 22. Kh NxOy v kim loi M l A. N2O v Fe. B. NO2 v Al. C. N2O v Al. D. NO v Mg. 25: Cho hn hp gm 1,12 gam Fe v 1,92 gam Cu vo 400 ml dung dch cha hn hp gm H 2SO4 0,5M v NaNO3 0,2M. Sau khi cc phn ng xy ra hon ton, thu c dung dch X v kh NO (sn phm kh duy nht). Cho V ml dung dch NaOH 1M vo dung dch X th lng kt ta thu c l ln nht. Gi tr ti thiu ca V l A. 400. B. 120. C. 240. D. 360. 26: Ho tan hon ton 12,42 gam Al bng dung dch HNO3 long (d), thu c dung dch X v 1,344 lt ( ktc) hn hp kh Y gm hai kh l N 2O v N2. T khi ca hn hp kh Y so vi kh H 2 l 18. C cn dung dch X, thu c m gam cht rn khan. Gi tr ca m l A. 34,08. B. 38,34. C. 106,38. D. 97,98. I H C 2009 - KH I B 27: Cho 61,2 gam hn hp X gm Cu v Fe 3O4 tc dng vi dung dch HNO 3 long, un nng v khuy u. Sau khi cc phn ng xy ra hon ton, thu c 3,36 lt kh NO (sn phm kh duy nht, ktc), dung dch Y v cn li 2,4 gam kim loi. C cn dung dch Y, thu c m gam mui khan. Gi tr ca m l A. 108,9. B. 151,5. C. 137,1. D. 97,5. 28: Cho m gam bt Fe vo 800 ml dung dch hn hp gm Cu(NO3)2 0,2M v H2SO4 0,25M. Sau khi cc phn ng xy ra hon ton, thu c 0,6m gam hn hp bt kim loi v V lt kh NO (sn phm kh duy nht, ktc). Gi tr ca m v V ln lt l A. 10,8 v 2,24. B. 10,8 v 4,48. C. 17,8 v 2,24. D. 17,8 v 4,48. 29: Ha tan hon ton 1,23 gam hn hp X gm Cu v Al vo dung dch HNO 3 c, nng thu c 1,344 lt kh NO 2 (sn phm kh duy nht, ktc) v dung dch Y. Sc t t kh NH3 (d) vo dung dch Y, sau khi phn ng xy ra hon ton thu c m gam kt ta. Phn trm v khi lng ca Cu trong hn hp X v gi tr ca m ln lt l A. 21,95% v 0,78. B. 78,05% v 2,25. C. 21,95% v 2,25. D. 78,05% v 0,78. D NG 2 BI T P V KIM LO I TC D NG V I DUNG D CH MU I

st sch trong 200ml dung dch CuSO4 . Sau khi phn ng kt thc, ly dinh st ra khi dung dch ra sch nh bng nc ct v sy kh ri em cn thy khi lng inh st tng 0,8 gam so vi ban u.Cu 1. Ngm mt inh Nng mol ca dung dch CuSO4 dng l gi tr no di y? A. 0,05M. B. 0,0625M C. 0,50M D. 0,625M

12

Cu 2: Ngm mt thanh Zn vo 100ml dung dch AgNO3 0,1M n khi AgNO3 tc dng ht, th sau phn ng so vi thanh Zn ban u s A. gim 0,755 B. tng 1,08 C. tng 0,755 D. tng 7,55

khi lng thnh Zn

Cu 3. Cho t t bt Fe vo 50ml dung dch CuSO4 0,2M, khuy nh cho ti khi dung dch mt mu xanh. Khi lng bt Fe tham gia phn ng l: A. 5,6 gam. B. 0,056 gam. C. 0,56 gam. D. 0,28 gam Cu 4. Cho 2,24 gam bt Fe vo 200ml dung dch hn hp AgNO3 0,1M v Cu(NO3)2 0,5M. Khuy u ti phn ng hon ton, thu c cht rn A v dung dch B. 1. Khi lng cht rn A l : A. 4,08 gam B. 6, 16 gam C. 7,12 gam D. 8,23 gam 2. Nng mol ca cc cht trong dung dch B l : A. 0,20 M v 0,3 M B. 0,20M v 0,35 M C. 0,35 M v 0,45 M D. 0,35 M v 0,6 M Cu 5. Ngm mt inh st sch trong 200 ml dung dch CuSO4 . Sau khi phn ng kt thc, ly inh st ra khi dung dch, ra sch v lm kh nhn thy khi lng inh st tng thm 0,8 gam . Nng mol ca dung dch CuSO4 l : A.0,3 M B. 0,4M C. 0,5M D. 0,6M Cu 6. Ngm mt vt bng ng c khi lng 10 gam trong 250 gam dung dch AgNO3 4%. Khi ly vt ra th lng AgNO3 trong dung dch gim 1,7%. Khi lng ca vt sau phn ng l : A. 10,184 gam B. 10,076 gam C. 10 , 123 gam D. 10,546 gam Cu 7. Mt hn hp A gm Fe v Fe2O3. Nu cho lng kh CO d i qua a gam hn hp A un nng ti phn ng hon ton th thu c 11,2 gam Fe. Nu ngm a gam hn hp A trong dung dch CuSO4 d, phn ng xong ngi ta thu c cht rn c khi lng tng thm 0,8 gam . Gi tr ca a l : A. 6,8 gam B. 13,6 gam C. 12,4 gam D. 15,4 gam Cu 8. Ngm mt l km trong dung dch c ho tan 4,16 gam CuSO4 . Phn ng xong, 2,35%. Khi lng l km trc khi phn ng l. A. 80 gam.. B. 100 gam. C. 40 gam. D. 60 gam. Cu 9: Nhng mt thanh kim loi M ha tr II nng m gam vo dung dch Fe(NO3)2 th khi lng thanh kim loi gim 6 % so vi ban u. Nu nhng thanh kim loi trn vo dung dch AgNO3 th khi lng thanh kim loi tng 25 % so vi ban u. Bit gim s mol ca Fe(NO3)2 gp i gim s mol ca AgNO3 v kim loi kt ta bm ht ln thanh kim loi M. Kim loi M l: A. Pb B. Ni C. Cd D. Zn Cu 10: Cho m gam hn hp bt cc kim loi Ni v Cu vo dung dch AgNO3 d. Khuy k cho n khi phn ng kt thc thu c 54 gam kim loi. Mt khc cng cho m gam hn hp bt cc kim loi trn vo dung dch CuSO4 d, khuy k cho n khi phn ng kt thc, thu c kim loi c khi lng bng (m + 0,5) gam. Gi tr ca m l: A. 15,5 gam B. 16 gam C. 12,5 gam D. 18,5 gam Cu 11: Ha tan hn hp bt kim loi gm 8,4 gam Fe v 6,4 gam Cu vo 350 ml dung dch AgNO3 2M. Sau khi phn ng xy ra hon ton thu c m gam cht rn. Gi tr ca m l: A. 70,2 gam B. 54 gam C. 75,6 gam D. 64,8 gam Cu 12: Cho 2,24 gam bt st vo 200 ml dung dch cha hn hp gm AgNO3 0,1M v Cu(NO3)2 0,5M. Sau khi cc phn ng xy ra hon ton, thu c dung dch X v m gam cht rn Y. Gi tr ca m l: A. 2,80 gam B. 4,08 gam C. 2,16 gam D. 0,64 gam Cu 13: Cho hn hp gm 1,2 mol Mg v x mol Zn vo dung dch cha 2 mol Cu2+ v 1 mol Ag+ n khi cc phn ng xy ra hon ton, thu c mt dung dch cha ba ion kim loi. Trong cc gi tr sau y, gi tr no ca x tho mn trng hp trn: A. 1,8 B. 1,5 C. 1,2 D. 2,0 Cu 14: Cho m gam bt Fe vo 800 ml dung dch hn hp gm Cu(NO3)2 0,2M v H2SO4 0,25M. Sau khi cc phn ng xy ra hon ton, thu c 0,6m gam hn hp bt kim loi v V lt kh NO (sn phm kh duy nht, ktc). Gi tr ca m v V ln lt l: A. 17,8 v 4,48 B. 17,8 v 2,24 C. 10,8 v 4,48 D. 10,8 v 2,24 Bi -15 -Khuy 7,85 g hn hp bt kim loi Zn v Al vo 100 ml dd gm FeCl2 1M v CuCl2 0,75M th thy phn ng va vi nhau . V vy % khi lng ca Al trong hn hp l: (Zn = 65, Al = 27) A.17,2%. B.12,7%. C.27,1%. D.21,7% Bi -16 -Cho 1,1 gam hn hp bt nhm v bt st vi s mol nhm gp i s mol st vo 100 ml dung dch AgNO3 0,85M ri khuy u ti khi phn ng kt thc th thu c dung dch X. Nng mol ca Fe(NO3)2 trong X l: A.0,1M B.0,2M. C.0,05M D.0,025M D NG 3: BI T P I N PHN L thuy t Bi 1 in phn dung dch cha CuSO4 v MgCl2 c cng nng mol vi in cc tr . Hy cho bit nhng cht g ln lt xut hin bn catot v bn anot . A.Catot : Cu , Mg , Anot : Cl2 , O2 B Catot : Cu , H2, Anot : Cl2 , O2 C Catot : Cu , Mg , Anot : Cl2 , H2 D Catot : Cu , Mg , H2,Anot : ch c O2 Bi 2 in phn dung dch vi bnh in phn c in cc tr, mng ngn xp cc dung dch: (X1) KCl, (X2) CuSO4, (X3) KNO3, (X4) AgNO3, (X5) Na2SO4, (X6) ZnSO4, (X7) NaCl, (X8) H2SO4, (X9) NaOH, (X10) CaCl2 Sau khi in phn dung dch thu c qu tm ho l: A Tt c. B (X1), (X3), (X5), (X7).

khi lng l km tng

13

C (X2), (X4), (X6), (X8). D (X2), (X6), (X8). Bi 3 in phn dung dch cha CuSO4 v NaOH vi s mol : nCuSO4 4 Ag + O2 + 4 HNO3 B 2 NaCl + 2 H2O (in phn nng chy) --> H2 + Cl2 + 2 NaOH (c vch ngn). C 2ACln (in phn nng chy) --> 2A + nCl2 D 4MOH (in phn nng chy)--> 4M + 2H2O Bi 7 iu ch Cu tinh khit t CuCO3.Cu(OH)2. a. Ho tan CuCO3.Cu(OH)2 vo axit H2SO4 ri cho dung dch thu c tc dng vi bt Fe. b. Nung CuCO3.Cu(OH)2 ri dng H2 kh nhit cao. c. Ho tan CuCO3.Cu(OH)2 trong axit HCl ri in phn dung dch thu c: A a, b. B b, c. C c. D a, b v c. Bi 8 Khi in phn dung dch KI c ln h tinh bt, hin tng quan st c sau thi gian in phn l: A Dung dch khng mu. B Dung dch chuyn sang mu hng. C Dung dch chuyn sang mu xanh. D Dung dch chuyn sang mu tm. Bi 10 Cho 4 dung dch mui : CuSO4 , ZnCl2 , NaCl , KNO3 . Khi in phn 4 dung dch trn vi in cc tr dung dch no s cho ta mt dung dch baz . A CuSO4 B ZnCl2 C NaCl D KNO3 Bi 15 in phn dung dch cha NaCl v HCl c thm vi git qu tm. Mu ca dung dch s bin i nh th no trong qu trnh in phn . A sang tm. B sang tm ri sang xanh. C sang xanh. D Ch mt mu . Bi 16 Cho dng in mt chiu i qua bnh in phn cha dung dch H2SO4 long xy ra qu trnh sau: A Oxi ho hidro. B Phn hu axit H2SO4. C Kh lu hunh. D Phn hu H2O. Bi 17 in phn dung dch cha H2SO4 trong mt thi gian ngn . pH ca dung dch bin i nh th no trong qu trng in phn ? A Gim mnh. B Tng nh. C Gn nh khng i. D Tng mnh. Bi 19 in phn dung dch H2SO4 (BP c in cc tr) sau mt thi gian thy pH dung dch gim dn so vi trc in phn, l do: A S in phn to ra thm mt lng axit. B Nc b phn tch gii phng nhiu H+. C Nc b phn tch thnh H2 v O2 thot ra. D Mt l do khc A, B v C Bi 20 in phn hon ton mt dung dch cha Ag2SO4, CuSO4, NiSO4, nhn thy kim loi bm catot theo th t ln lt l: A Ni, Cu, Ag. B Ag, Ni, Cu. C Ag, Cu, Ni. D Cu, Ni, Ag. Bi 23 in phn (in cc tr, mng ngn xp) dung dch X thy pH tng, dung dch Y thy pH gim. Vy dung dch X v dung dch Y no sau y ng: A (X) KBr, (Y) Na2SO4. B (X) AgNO3, (Y) BaCl2. C (X) BaCl2, (Y) CuSO4. D (X) NaCl, (Y) HCl. BI T P Cu 1: y? A. Ni . Cu 2:

in 3A. Sau 1930 giy, thy khi lng ca catt tng 1,92 gam. Kim loi trong mui clorua trn l kim loi no di in phn dung dch mui CuSO4 d trong thi gian 1930 giy, thu c 1,92 gam Cu catt. Cng dng in trong qu trnh in phn l gi tr no di y?B. Zn . C. Fe . D. Cu

in phn vi in cc tr dung dch mui clorua ca mt kim loi ho tr (II) vi cng dng

A. 3,0A. B. 4,5A C. 1,5A D. 6,0A Cu 3: C 200 ml dd CuSO4 (d = 1,25) (dd A). Sau khi in phn dd A, khi lng ca dd gim i 8 gam. Mt khc, lm kt ta ht lng CuSO4 d sau phn ng in phn phi dng ht 1,12 lt H2S (ktc). Nng % v nng mol ca dd CuSO4 trc khi in phn l: A. 9,6; 0,75 B. 50; 0,5 C. 20; 0,2 D. 30; 0,55 Cu 4. i n phn 200 ml dd CuSO 4 v i cc i n c c tr b ng dng i n m t chi u I = 19,3A. Khi th tch cc kh thot ra c hai i n c c u b ng 1,12 lt (ktc) th ng ng i n phn. 1. Khi lng kim loi (gam) sinh ra catot l : A. 0,32 B. 0,64 C. 3,2 D. 6,4 2. Thi gian in phn (s) l: A. 1000 B. 2000 C. 100 D. 200 3. Nng (M) ca dd CuSO4 l: A. 0,25 B. 2,5 C. 0,1 D. 1 Cu 5.Thc hin phn ng in phn dd cha m gam hh CuSO4 v NaCl vi in cc tr, bnh in phn c mng ngn, cng dng in I = 5A n khi nc b in phn ti c 2 in cc th ngng in phn. Dung dch sau khi in phn ho tan va 1,6 gam CuO v anot c 448 ml kh (ktc) thot ra. 1. m nhn gi tr l: A. 5,97 B. 3,785 C. 4,8 D. 4,95

14

2. Khi lng dd gim i trong qu trnh in phn l: A. 1,295 B. 2,45 C. 3,15 D. 3,59 3. Thi gian in phn l A. 196 B. 98 C. 1816 D. 1918 Cu 6 .in phn 200 ml dd A cha Fe2(SO4)3 0,5M v CuSO4 0,5M.Dung dch sau in phn tc dng va vi 10,2 gam Al2O3. 1. Khi lng kim loi thot ra catot l: A. 6,4 B. 5,6 C. 12 D. A khc 2. Th tch (lt) kh thot ra anot l: A. 2,24 B. 3,36 C. 4,48 D. A khc. Cu 8. in phn (dng in cc tr) dd mui sunfat kim loi ho tr II vi I = 3A. Sau 1930s thy khi lng catot tng 1,92g. 1. Kim loi trong mui sunfat l: A. Cu B. Mg C. Zn D. Fe 2.Th tch (ml) ca lng kh to thnh ti Anot 25oC, 770 mmHg l: A. 252 B. 362 C. 372 D. 400 Cu 9. i n phn 400 ml dd AgNO 3 0,2M v Cu(NO 3 ) 2 0,1M v i c ng dng i n 10A, anot b ng b ch kim. Sau th i gian t th y catot n ng thm m gam, trong c 1,28 gam Cu. H = 100% 1. Gi tr ca m l: A. 1,28 B. 9,92 C. 11,2 D. 2,28 2. Thi gian in phn l: A. 1158s B. 386s C. 193s D. 19,3s 3. Nu th tch dd khng thay i th sau khi in phn, nng mol ca cc cht trong dd l: A. 0,04; 0,08 B. 0,12; 0,04 C. 0,02; 0,12 D. K t qu khc. Cu 10. i n phn 400 ml dd CuSO 4 0,2M v i c ng I = 10A. Sau th i gian t th y c 224 ml kh duy nh t thot ra anot. Bi t cc i n c c tr v hi u su t i n phn l 100%. (24, 25) 1. Khi lng (gam) catot tng ln l: A. 1,28 B. 0,32 C. 0,64 D. 3,2 2.Thi gian in phn (s) l: A. 482,5 B. 965 C. 1448 D. 1930 Cu 11. in phn dd X cha 0,4 mol M(NO3)2 v 1 mol NaNO3 vi in cc tr, trong thi gian 48'15'' thu c 11,52 gam kim loi M ti catot v 2,016 lt kh (ktc) ti anot. Kim loi M l: A. Cu B. Zn C. Ni D. A khc Cu 12. in phn 100 ml dd CuSO4 0,2M vi I = 9,65A, t = 2000s, H = 100%. 1. Khi lng (gam)Cu thu c catot l: A. 0,32 B. 0,96 C. 0,64 D. 0,16 2. Nu in phn ht lng CuSO4 trn th pH ca dd sau in phn l: A. 1 B. 0,7 C. 0,35 D. A khc D NG 4: BI TON V KIM LO I TC D NG V I N C, KIM LO I TC D NG V I DUNG D CH BAZ V M T S H P CH T C A NHM CU 1.Hn hp X gm Na, K, Ba ha tan ht trong nc d to dung dch Y v 5,6 lt kh ( ktc). Tnh V ml dung dch H2SO4 2M ti thiu trung ha Y A. 125 ml B. 100 ml C. 200 ml D. 150 ml Cu 2.Thc hin hai th nghim sau: Th nghi m 1 : Cho m gam hn hp Ba v Al vo nc d, thu c 0,896 lt kh ( ktc) Th nghi m 2 : Cng cho m gam hn hp trn cho vo dung dch NaOH d thu c 2,24 lt kh ( ktc) Cc phn ng xy ra hon ton. Gi tr ca m l: A. 2,85 gam B. 2,99 gam C. 2,72 gam D. 2,80 gam Cu 3. Ha tan hon ton 7,3 gam hn hp X gm kim loi Na v kim loi M (ha tr n khng i) trong nc thu c dung dch Y v 5,6 lt kh hiro ( ktc). trung ha dung dch Y cn dng 100 ml dung dch HCl 1M. Phn trm v khi lng ca kim loi M trong hn hp X l: A. 68,4 % B. 36,9 % C. 63,1 % D. 31,6 % Bi -3 -Rt t t 400 ml dung dch HCl 2M vo 200 ml dung dch NaAlO2 1M. Tnh khi lng kt ta thu c? (chn p n ng). A.15,6 gam B.7,8 gam C.11,7 gam D.Khng c kt ta. Bi -4-Cho mt lng bt nhm vo dung dch HCl d thu c 6,72 lit H2 (ktc). Cng lng bt nhm nu cho vo dung dch NaOH d th thu c th tch H2 l bao nhiu? A.2,24 lit. B.4,48 lit. C.6,72 lit. D.5,6 lit Bi -5 -C hn hp 3 cht rn: Mg, Al, Al2O3. Nu cho 9 gam hn hp tc dng vi dung dch NaOH d, sinh ra 3,36 lit kh H2. Nu cng cho mt lng hn hp nh trn tc dng vi dung dch HCl d, sinh ra 7,84 lit H2. Cc th tch kh u o ktc. tnh khi lng mi cht c trong hn hp. (chn p n ng) A.4,8 gam; 4,05 gam; 0,15 gam. B.2,4 gam; 1,35 gam; 5,25 gam C.4,8 gam; 2,7 gam; 1,5 gam. D.3,6 gam; 2,7 gam; 2,7 gam Bi -6 -Cho m gam hn hp X gm Na2O v Al2O3 tc dng hon ton vi H2O thu c 200 ml dung dch A ch cha mt cht tan duy nht c nng 0,5M. Thi kh CO2 d vo A thu c a gam kt ta.Tr s ca m v a ln lt l: A.8,3 gam v 7,2 gam. B.13,2 gam v 6,72 gam C.12,3 gam v 5,6 gam D.8,2 gam v 7,8 gam Bi -7 -Cho 15,6 gam hn hp A gm bt Al v Al2O3 tc dng va vi 200 ml dung dch KOH nng 2M. hy cho bit khi lng ca tng cht trong hn hp A? A.5,4 gam Al v 10,2 gam Al2O3 B.2,7 gam Al v 12,9 gam Al2O3 C.7,1 gam Al v 8,5 gam Al2O3 D.8,1 gam Al v 7,5 gam Al2O3

15

Bi -8 -Ha tan 12 gam hn hp Al2O3 v Al trong NaOH d thy khi lng dung dch sau phn ng tng thm 11,4 gam. Khi lng Al2O3 v Al trong hn hp ban u l: A.2 gam v 10 gam B.3,4 gam v 8,6 gam C.6,6 gam v 5,4 gam D.4,6 gam v 7,4 gam Bi -9 -Khi cho hn hp gm 3,45 gam Na v 1,35 gam Al vo nc d th th tch kh sinh ra iu kin tiu chun l: A.1,68 lt. B.2,8 lt. C.3,36 lt. D.3,92 lt Bi -10 -Cho 2,7 gam Al vo 100 ml dung dch NaOH 2,0 M thu c dung dch A. Thm dung dch cha 0,45 mol HCl vo dung dch A th lng kt ta thu c l: A.3,90 gam. B.1,30 gam. C.7,80 gam. D.2,34 gam Bi -11 -Cho bt nhm Al d vo 100ml dd hn hp gm NaOH 0,1M v Ba(OH)2 0,05M. Khi phn ng kt thc th tch kh H2 bay ra ktc l: A.0,672 lt. B.0,448 lt. C.0,336 lt. D.0,224 lt Bi -12 -Hn hp X gm Na v Al v tin hnh hai th nghim sau: TN 1: Nu cho m gam X tc dng vi nc d th thu c V1 lt H2 TN 2: Nu cho m gam X tc dng vi dung dch NaOH d th thu c V2 lt H2 Cc th tch kh o cng iu kin. Quan h gia V1 v V2 l: A.V1 > V2. B.V1 V2. C.V1 < V2 D.V1 V2 Bi -13 -Cho m gam hn hp A gm Na2O v Al2O3 phn ng hon ton vi H2O thu c 200 ml dung dch A1 ch cha mt cht tan duy nht c nng 0,5 M. Thnh phn % theo khi lng ca Na2O v Al2O3 trong A l: A.37,8% v 62,2 % B.27,8% v 26,2 % C.17,8% v 62,6 %. D.38,7% v 32,2% Bi -14 -Mt dung dch hn hp cha a mol NaAlO2 v a mol NaOH tc dng vi mt dung dch cha b mol HCl. iu kin thu c kt ta sau phn ng l: A.a = b .B.a = 2b. C.b = 5a. D.a < b < 5a Bi -15 -Cho 0,54 gam Al vo 40 ml dung dch NaOH 1M, sau phn ng hon ton thu c dung dch X. Cho t t dung dch HCl 0,5M vo dung dch X thu c kt ta. thu c lng kt ta ln nht cn th tch dung dch HCl 0,5M l: A.110ml. B.90ml. C.70ml. D.80ml Bi -16 -Cho 31,2 hn hp bt Al v Al2O3 tc dng vi dung dch NaOH d, thu c 13,44 lit H2 (ktc). Hm lng nhm trong hn hp bng: A.17,30% B.34,615 %. C.51,915%. D.69,23% Bi -17 -Cho 31,2 hn hp bt Al v Al2O3 tc dng vi dung dch NaOH d, thu c 13,44 lit H2 (ktc). Phn trm khi lng bt nhm trong hn hp bng: A.85,675. B.65,385 %. C.34,615 %. D.17,31%. Bi -18 -Khi cho 100 ml dung dch HCl 0,2 M vo 200 ml dung dch NaAlO2 0,075 M khi lng kt ta thu c l: A.3,12 gam. B.0,52 gam. C.1,17 gam. D.0 gam Bi -19 -Cho 200 ml dung dch NaOH vo 200 ml dung dch 200 ml dung dch AlCl3 2M, thu c mt kt ta, nung kt ta n khi lng khng i c 5,1 gam cht rn. Nng mol/lt ca dung dch NaOH l: A.1,5 M v 7,5 M B.1,5 M v 3M. C.1M v 1,5 M. D.2M v 4M Bi -20-Cho 2,16 gam Al vo dung dch HNO3 long, va th thu c dung dch A v khng thy c kh thot ra. Thm dung dch NaOH vo dung dch A n khi lng kt ta nh nht th s mol NaOH dng l: A.0,16 mol. B.0,19 mol. C.0,32 mol. D.0,35 mol Bi -21 -M l mt kim loi kim. Hn hp X gm M v Al. Ly 3,72 gam hn hp X cho vo Nc d gii phng 0,16 gam kh v cn li 1,08 gam cht rn. M l A.K. B.Na . C.Rb . D.Cs Bi -22 -Cho m gam Na vo 200 gam dung dch Al2(SO4)3 1,71%. Phn ng kt thc thu c 0,01mol Al(OH)3 kt ta. Tnh m? A.0,69 B.0,69 hoc 1,61 C.0,69 hoc 1,15 D.1,61 D NG 5: BI T P V XC NH TN KIM LO I Cu 1: Cho 3,024 gam mt kim loi M tan ht trong dung dch HNO3 long, thu c 940,8 ml kh NxOy (sn phm kh duy nht, ktc) c t khi i vi H2 bng 22. Kh NxOy v kim loi M l: A. NO v Mg B. NO 2 v Al C. N 2 O v Al D. N 2 O v Fe Cu 2:Hn hp X gm hai mui cacbonat ca 2 kim loi kim th hai chu k lin tip. Cho 7,65 gam X vo dung dch HCl d. Kt thc phn ng, c cn dung dch th thu c 8,75 gam mui khan. Hai kim loi l: A. Mg v Ca B. Ca v Sr C. Be v Mg D. Sr v Ba Cu 3. Cho 6,45 gam hn hp hai kim loi A v B ( u c ho tr II ) tc dng vi dung dch H2SO4 long d, sau khi phn ng xong thu c 1,12 lt kh ktc v 3,2 gam cht rn. Lng cht rn ny tc dng va vi 200 ml dung dch AgNO3 0,5M. Hai kim loi A v B l :` A. Mg , Cu B. Cu , Zn C. Ca , Cu D. Cu , Ba Cu 4. Cho 2,23 gam hn hp hai kim loi A, B tc dng vi dung dch HCl d, gii phng 0,56 lt kh H2 (ktc). Phn cht rn cn li c khi lng 1,08 gam cho tc dng vi dung dch HNO3 c nng thu c 0,224 lt kh duy nht (ktc) . Hai kim loi A v B l : A. Na, Cu B. Mg , Cu C. Na , Ag D. Ca , Ag

16

Cu 5. Nung nng 1,6 gam kim loi X trong khng kh ti phn ng hon ton thu c 2 gam oxit.Cho 2,8 gam kim loi Y tc dng vi clo thu c 8,125 gam mui clorua. Hai kim loi X v Y l : A. Cu , Mg B. Cu , Zn C. Cu , Na D. Cu, Fe Cu 6. C 5,56 gam hn hp A gm Fe v mt kim loi M ( c ho tr n khng i ). Chia A lm hai phn bng nhau: Phn mt ho tan ht trong dung dch HCl c 1,568 lt(ktc) kh H2. Phn hai ho tan ht trong dung dch HNO3 long thu c 1,344 lt (ktc) kh NO duy nht v khng to ra NH4NO3 trong dung dch . Kim loi M l : A. Mg B. Al C. Cu D. Zn Cu 7. Cho 25,9 gam hn hp X gm bt S v mt kim loi M ho tr 2 vo bnh kn khng c khng kh, t nng bnh cho n khi phn ng hon ton thu c cht rn A. Bit A tan hon ton trong dung dch HCl d thu c 6,72 lt kh B (ktc). T khi ca B so vi hiro l

35 . Kim loi M cn tm l : 3

A. Mg

B. Zn

C.

Fe D. Al Cu 8. Chia 7,22 gam hn hp X gm Fe v kim loi M c ho tr khng i thnh hai phn bng nhau.Phn 1 ho tan ht trong dung dch HCl thu c 2,128 lt kh hiro(ktc) .Phn 2 ho tan ht trong dung dch HNO3 thu c 1,792 lt (ktc) kh NO duy nht .Kim loi M cn tm l : A. Mg .B. Al C. Zn D. Cu Cu 9. Ho tan hon ton 62,1 gam kim loi M trong dung dch HNO3 long thu c 16,8 lt hn hp kh X (ktc) gm hai kh khng mu, khng ho nu trong khng kh .T khi ca X xo vi H2 l 17,2. Kim loi M l : A. Cu . B. Mg .C. Al .D. Zn Cu 10.Hn hp X gm Mg v kim loi M. Ha tan hon ton 8 gam hn hp X cn va 200 gam dung dch HCl 7,3 %. Mt khc cho 8 gam hn hp X tc dng hon ton vi kh Cl2 cn dng 5,6 lt Cl2 ( ktc) to ra hai mui clorua. Kim loi M v phn trm v khi lng ca n trong hn hp X l: A. Al v 75 % B. Fe v 25 % C. Al v 30 % D. Fe v 70 % Cu 11.Ha tan hon ton 6 gam hn hp X gm Fe v mt kim loi M (ha tr II) vo dung dch HCl d, thu c 3,36 lt kh H2 ( ktc). Nu ch ha tan 1,0 gam M th dng khng n 0,09 mol HCl trong dung dch. Kim loi M l: A. Mg B. Zn C. Ca D. Ni Cu 12. ha tan hon ton 6,834 gam mt oxit ca kim loi M cn dng ti thiu 201 ml dung dch HCl 2M. Kim loi M l: A. Mg B. Cu C. Al D. Fe Cu 13. Ngm mt l km nh trong mt dung dch c cha 1,12 g ion kim loi c in tch 2+. Phn ng xong, khi lng l km gim i 0,18 g. Ion kim loi trong dung dch l ion ca nguyn t: A.Cu. B.Fe. C.Ni. D.Pb D NG 6 OXITAXIT V AXIT NHI U N C TC D NG V I DUNG D CH KI M, CC H P CH T C A NHM Cu 1. Dung dch c cha a mol NaOH tc dng vi dd c cha b mol H3PO4 sinh ra mui axit. T l a/b l: A. 1 CuCl2+ NO + NaCl + H2O H s cn bng A. 3,4,2,3,3,2,4 B. 2,6,2,6,4,2,4 C. 3,4,2,3,4,2,4 D. 3,8,2,3,2,2,4 Cu 4.Cho cc phn ng ha hc sau: CrCl3 + NaOCl + NaOH -> Na2CrO4 + NaCl + H2O H s cn bng

22

A. 2,6,4,2,3,4 B. 4,6,8,4,3,4 C. 2,3,10,2,9,5 D. 2,4,8,2,9,8 Cu 5.Cho cc phn ng ha hc sau: Mg + HNO3 -> Mg(NO3)2 + NH4NO3 + H2O H s cn bng A. 4,5,4,1,3 B. 4,8,4,2,4 C. 4,10,4,1,3 D. A ng E. 2,5,4,1,6 Cu 6.Cho cc phn ng ha hc sau: CuS2 + HNO3 -> Cu(NO3) 2 + H2SO4 + N2O + H2O H s cn bng A. 4,22,4,8,7,3 B. 4,12,4,4,7,3 C. 3,12,4,8,7,6 D. 4,22,4,4,7,4 Cu 7Cho phn ng ha hc sau: MnO2 + H+ + Cl- -> Cl2 + H2O + Mn2+ A. 3,4,2,1,1,1 B. 2,4,2,1,2,1 C. 1,6,1,1,1,2 D. 1,4,2,1,2,1 Cu 8.Cho phn ng ha hc sau: As2S3 + KNO3 -> H3AsO4 + H2SO4 + NO + H2O A. 3, 28, 16, 6, 9, 28 B. 6, 14, 18, 12, 18, 14 C. 6, 28, 36, 12, 18, 28 D. 6, 14, 36, 12, 18, 14 Cu 9.Cho phn ng ha hc sau: Cu2S + HNO3 -> Cu(NO3)2 + CuSO4 +NO + H2O A. 3, 8, 3, 4, 5, 4 B. 2, 8, 2, 3, 4, 4 C. 3, 8, 3, 3, 10, 4 D. 3, 1, 3, 2, 2, 1, 3 Cu 10.Cho cc phn ng ha hc sau: HNO3 + H2S -> NO + S + H2O H s cn bng ln lt l: A. 2,3,2,3,4 B. 2,6,2,2,4 C. 2,2,3,2,4 D. 3,2,3,2,4 Cu 11.Trong iu kin th nghim c th, Al tc dng vi HNO3 to hn hp kh X gm : NO, NO2 theo phng trnh phn ng:Al + HNO3 -> Al(NO3)3 + NO2 + NO + H2O Nu dx/40 =1,122 th h s cn bng phn ng ln lt l: A. 16, 30, 16, 2, 29, 44 B. 16, 90, 16, 3, 39, 45 C. 17, 15, 8, 3, 19, 44 D. 16, 30, 16, 3, 39, 90 Cu 12.Cn bng hai phng trnh phn ng sau bng phng php thng bng ion-electron: C2H2 + KMnO4 + H2O -> H2C2O2 + MnO2 + KOH Cc h s theo th t cc cht ln lt l: A. 2,4,3,2,5,8 B. 1,4,2,3,4,4 C. 3,8,4,3,4,4 D. 2,8,3,3,8,8 Cu 13.Hon thnh v cn bng cc phng trnh phn ng theo phng php ion in t: CH2=CH2 + KMnO4 + H2SO4 -> Cc cht sinh ra sau phn ng l: A. C2H4(OH) 2, MnSO4 , K2SO4, H2O B. CH3CHO, MnSO4 , K2SO4, H2O C. CH3COOH, MnO, K2SO4, H2O D. CH3COOH, MnSO4 , K2SO4, H2O Cu 14.Hon thnh cc phng trnh phn ng ha hc sau: Kl + MnO2 + H2SO4 -> I2 + cc cht l: A. MnSO4, KlO3, HI B. MnSO4, KlO3, K C. MnSO4, K2SO4,H2O D. MnSO4, KlO3, Cu 15.Hon thnh cc phng trnh phn ng ha hc sau: NO + K2Cr2O7 + H2SO4 -> cc cht l A. HNO3, H2O B. K2SO4, Cr2(SO4)3 C. K2SO4, Cr2(SO4)3, HNO3 D. K2SO4, Cr2(SO4)3, HNO3, H2O Cu 16.Hon thnh cc phng trnh phn ng ha hc sau: SO2 + KMnO4 +H2O -> cc cht l : A. K2SO4, MnSO4 B. MnSO4, KHSO4 C. MnSO4, KHSO4, H2SO4 D. MnSO4, K2SO4, H2SO4 Cu 17.Cho phn ng ha hc sau: M2Ox + HNO3 -> M(NO3)3 + NO + H2O Vi gi tr no ca x phn ng trn s l phn ng oxi ho- kh hoc phn ng trao i ? Cu 18. Cho cc cht, ion sau: Cl-, NaS2 , NO2, Fe2+, SO2, Fe3+, N2O5, SO42-, SO2-3, MnO, Na, Cu. Cc cht ion no va c tnh kh, va c tnh oxi ha: A. Cl-, NaS2 , NO2, Fe2+ B. NO2, Fe2+, SO2, MnO, SO323+ C. NaS2 , Fe , N2O5 , MnO D. MnO, Na, Cu Cu 19. Phn ng gia dung dch kali pemanganat trong mi trng axit vi ion iodua c biu din bng phng trnh no di y ? A. 2MnO4 + 5I- + 16H+ -> 2Mn2+ + 8H2O + 5I2 B. MnO4 + 10I- + 2H+ -> Mn2+ + H2O + 5I2 + 11e + 2+ C. 2MnO4 + 10I + 16H -> 2Mn + 8H2O + 5I2 D. MnO4 + 2I- + 8H+ -> Mn2+ + 4H2O + I2 Cu 20.Cho cc dung dch X1: dung dch HCl; dung dch X2: dung dch KNO3; X3: dung dch HCl +KNO3; X4: dung dch Fe2(SO4) 3. Dung dch no c th ho tan c bt Cu: A. X1, X4, X2 B. X3,X4 C. X1, X2, X3,X4 D. X3, X2 Cu 21.Cho phng trnh phn ng: Al + HNO3 -> Al(NO3)3 + NO + N2O + H2O Nu t l mol gia N2O v N2 l 2:3 th sau khi cn bng ta c t l mol nAl: nn2o: n2 l: A. 23:4:6 B. 46:6:9 C. 46:2:3 D. 20:2:3 . D NG 11 : BI T P NH N BI T TCH BI T TINH CH Cu 1/ Dung hoa cht nao sau y nhn 4 dd:NaAlO2, AgNO3, Na2S, NaNO3? a dd HNO3 b dd HCl. c CO2 va nc. d BaCl2. Cu 2/ Chi dung duy nht mt dd nao sau y tach ring ly Al ra khoi hh Al, MgO, CuO,FeO va Fe3O4 ma khi lng Al khng thay i? a NaOH. bH2SO4c, ngui. c H2SO4 loang. dHNO3 loang. Cu 3/ Dung thuc th nao sau y nhn ra 3 goi bt ring bit: Al, Fe, Al2O3? a H2SO4 loang. b dd HCl. c HNO3 loang. d dd KOH. Cu 4/ Co 5 dd ring bit: FeCl3, FeCl2, AlCl3, NH4NO3, NaCl. Dung thuc th nao sau y nhn 5 dd trn? a NaOH. b HCl. c BaCl2. d NH3. Cu 5/ Co 3 cht bt: Al, Al2O3, Cr.Nhn 3 cht trn chi dung 1 thuc th: a dd NaOH. b dd HCl. c dd FeCl2. d H2O. Cu 6/ Co th dung 1 thuc th nhn bit 3 dd: natri sunfat, kali sunfit, nhm sunfat?

23

a dd HCl. b dd BaCl2. c dd NaOH. d quy tim. Cu 7/ Dung 2 hoa cht nao sau y nhn 4 dd: HCl, HNO3, KCl, KNO3? a quy tim, dd AgNO3. b quy tim, dd Ba(OH)2. c dd Ba(OH)2, dd AgNO3. d dd phenolphtalein, dd AgNO3. Cu 8/ loai bo tap cht Fe, Cu co trong mu Ag, ngi ta ngm mu bac nay vao dd d dd(ma khng lam tng lng Ag); a H2SO4c, ngui. b FeCl3. cAgNO3. d HNO3. Cu 9/ Dung 1 thuc th phn bit 4 cht rn: NaOH, Al, Mg, Al2O3 la: a dd HCl. b nc. c dd H2SO4. d dd HNO3 c. Cu 10/ Co th dung H2SO4 c lam kh cac cht: a NH3, O2, N2, CH4, H2. bCaO, CO2, CH4, H2. cSO2, NO2, CO2, CH4, H2. dNa2O, Cl2, O2, CO2, H2. Cu 11/ nhn 4 dd: NH4NO3, (NH4)2SO4, K2SO4, KOH, chi cn dung dd: a quy tim. b AgNO3. c NaOH. d Ba(OH)2. Cu 12/ Co th dung thuc th nao sau y nhn bit 4 dd ring bit: NH4Cl, NaCl, BaCl2, Na2CO3? a NaOH. b H2SO4. c quy tim. d HCl. Cu 13/ lam kh khi H2S co th dung: a ng sunfat khan. bP2O5. cCa(OH)2. d vi sng. Cu 14/ C cc dd : glucoz, glyxerol, etanol, etylfomat. Co th dung thuc th nao sau y nhn c ca 4 dd trn? a Cu(OH)2 b dd NaOH c dd AgNO3/NH3 d dd HCl Cu 15/ C 3 dd: saccaroz, glucoz, h tinh bt.Dng thuc th no sau y nhn 3 dd trn? a I2 b dd AgNO3/NH3 c Cu(OH)2 d dd Br2 Cu 16/ Chi dung nc brom khng th phn bit c 2 cht nao sau y? a Anilin va xiclohexylamin. b dd anilin va dd amoniac. c Anilin va benzen. d Anilin va phenol. Cu 17/ Thuc th n gian nhn 3 dd kali clorua, kem sunfat, kali sunfit la: a dd HCl. b dd BaCl2. c quy tim. d dd H2SO4. Cu 18/ loai c H2SO4 ra khoi hn hp vi HNO3, ta dung: a dd Ca(NO3)2 va u. b dd AgNO3 va u. c dd CaSO4 va u. d dd Ba(OH)2 va u. Cu 19/ Chi dung nc co th phn bit c cac cht trong day: a Na, Ba, NH4Cl, NH4NO3. b Na, Ba, NH4Cl, (NH4)2SO4. c Na, K, NH4NO3, (NH4)2SO4. d Na, K, NH4Cl, (NH4)2SO4. Cu 20/ Chi co giy mau m, la, va giy tm dd mui X. Ngi ta phn bit 4 lo khi ring bit:O2, N2, H2S va Cl2 do co hin tng: khi(1) lam tan la chay bung ln, khi (2) lam mau cua giy mau bi nhat, khi (3) lam giy tm dd X co mau en.Kt lun sai la: a Khi (1) la O2, X la mui CuSO4. b Khi (1) la O2, khi (2) la Cl2. c X la mui CuSO4, khi (3) la Cl2. d X la mui Pb(NO3)2, khi (2) la Cl2. Cu 21/ Cho 5dd: FeCl3, FeCl2, AgNO3 , NH3 , hn hp NaNO3 va KHSO4. S dd hoa tan c Cu kim loai la: a 5 b 2 c 3 d 4 Cu 22/ t chay st trong clo d c cht X, nung st vi lu huynh thu c cht y. xac inh thanh phn phn t va hoa tri cua cac ng.t trong X, Y co th dung hoa cht nao sau y? a dd H2SO4 , dd BaCl2. b dd HNO3, dd Ba(OH)2. c dd H2SO4 va dd AgNO3 . d dd HCl, NaOH, oxy. Cu 23 / phn bit 3 dd: glucoz, caccaroz, andehytaxetic c th dng: a Cu(OH)2 b Na c dd Br2 d dd AgNO3/NH3 Cu 24/ Nhn bit 4 dd(khoang 0,1 M)Na2SO4, Na2CO3, BaCl2, LiNO3 chi cn dung: a axit sunfuric. b quy tim. c phenolphtalein. d bari hydroxyt. Cu 25/ Thuc th duy nht nhn cac dd: NH4NO3, NaNO3, Al(NO3)3, Mg(NO3)2,Fe(NO3)2,Fe(NO3)3, Cu(NO3)2 la: a NaCl. b NaOH. c Na2CO3. d NaAlO2. Cu 26/ Co cac binh khi: N2 NH3, Cl2, CO2, O2 khng nhan. xac inh binh NH3 Cn dung:(1)giy quy m, (2)bng tm nc, (3)bng tm dd HCl c, (4)Cu(OH)2, (5)AgCl. Cach lam ung la: a (1), (2), (3), (5). b (1), (2), (3). c(1), (3), (4). d(1),(3). Cu 27 / Chi dung Na2CO3 co th nhn c tng dd trong day nao sau y? a KNO3, MgCl2, BaCl2. b CaCl2, Fe(NO3)2, MgSO4. c NaCl, MgCl2, Fe(NO3)3. d Ca(NO3)2, MgCl2, Al(NO3)3. Cu 28/ lam kh khi amoniac ngi ta dung: a P2O5. b axit sunfuric khan. c ng sunfat khan. d vi sng. Cu 29/ Co cac binh khi: N2 NH3, Cl2, CO2, O2 khng nhan. xac inh binh NH3 va Cl2 chi cn dung: a giy quy tim m. bdd HCl. cdd BaCl2. d dd Ca(OH)2. Cu 30/ Phn bit 3 dd NaOH, HCl, H2SO4 chi dung: a quy tim. b Na2CO3. c BaCO3. d Zn.

24

Cu 31/ Thuc th phn bit 4 dd Al(NO3)3, NaNO3, Mg(NO3)2, H2SO4 la: a quy tim. B dd NaOH. C dd CH3COONa. d dd BaCl2. Cu 32/ nhn bit trong thanh phn khng khi co nhim tap cht hydro clorua, ta co th dn khng khi qua:(1)dd AgNO3 ,(2)dd NaOH, (3)nc ct co va giot quy tim, (4)nc vi trong. Phng phap ung la: a (1), (2), (3). b(1),(3). c(1). d (1), (2), (3), (4). Cu 33/ Co cac dd AgNO3, ddH2SO4loang,dd HNO3c, ngui, ddHCl. phn bit 2 kim loai:Al va Ag hoc Zn va Ag cn phai dung: a 1 trong 4 dd. b 2 trong 4 dd. c 3 trong 4 dd. d ca 4 dd. Cu 34/ thu c Ag tinh khit t hn hp bt Ag-Fe, ngi ta dung d dd: a FeCl3. bAgNO3 cCuSO4. d HNO3c, ngui, Cu 35/ Phn bit 4 cht ring bit: axit fomic, axit axetic, etyl fomiat, metyl axetat. Dng thuc th ng nht: a qu tm, dd Na2CO3 b qu tm,dd NaOH cqu tm,dd NaOH, Ag2O/ddNH3 dqu tm, Na Cu 36/ lam sach qung boxit co ln Fe2O3, SiO2 dung cho san xut nhm, ngi ta dung: a dd NaOH c, nong, CO2. b dd NaOH c, nong, dd HCl. c dd NaOH loang, dd HCl. d dd NaOH loang, CO2. Cu 37/ Thuc th duy nht nhn cac dd: NH4NO3, (NH4)2SO4, NaNO3, Al(NO3)3, Mg(NO3)2,Fe(NO3)2,Fe(NO3)3, Cu(NO3)2 la: a NaOH. b dd HCl. c AgNO3. d Ba(OH)2. Cu 38/ C th dng NaOH ( th rn) lm kh cc cht kh a.NH3, SO2, CO, Cl2. bN2, NO2, CO2, CH4, H2. c N2. Cl2, O2, CO2, H2. dNH3, O2, N2, CH4, H2. DANG T NG H P V C 1. Cho mt lng hn hp CuO v Fe2O3 tan ht trong dung dch HCl thu c hai mui c t l mol l 1:1. Phn trm khi lng CuO v Fe2O3 trong hn hp l: A. 50% v 50% B. 40% v 60% C. 30% v 70% D. Kt qu khc. 2. Khi c cn 400g dung dch mui c nng 20% th khi lng gim: A. 120g B. 320g C. 380g D. Kt qu khc 3. Hn hp X gm hai kim loi A, B c ho tr khng i, khng tan trong nc , ng trc Cu trong dy in ho. Khi ly m gam X cho vo dung dch CuSO 4 d, ton b lng Cu thu c cho phn ng vi dung dch HNO 3 d nhn c 1,12 lt NO duy nht (ktc). Cng ly m gam X ho tan vo dung dch HNO 3 d thu c V lt N2 duy nht (ktc). Xc nh V? A. 2,24 lt B. 3,36 lt C. 0,336 lt D. Kt qu khc. 6. Ho tan hoan ton 11,2 gam CaO vo nc thu c dung dch A. Xc V lt CO 2 vo dung dch A thu c 2,5 gam kt ta. Tnh V(ktc). A. 0,56 lt B. 8,4 lt C. 8,96 lt D. A hoc B 7. Ho tan 0,9 gam kim loi X vo dung dich HNO3 thu c 0,28 lt kh N2O duy nht (ktc). Xc nh kim loi X. A. Mg B. Al C. Zn D.Cu 8. Ho tan hon ton 10 gam hn hp hai mui cacbonat kim loi ho tr II v III bng dung dch HCl thu c dung dch A v 672 ml kh bay ra (ktc). Hi c cn dung dch A thu c bao nhiu gam mui khan? A. 10,33 g B. 20,66 g C. 30,99 g D. Kt qu khc 9. Ho tan hn hp X gm CuSO4 v AlCl3 vo nc thu c dung dch A. Chia A lm hai phn bng nhau: - Phn 1 cho phn ng vi dung dch BaCl2 d thu c 6,99 g kt ta. - Phn 2 cho phn ng vi dung dch NaOH d thu c kt ta, lc kt ta, lung n khi lng khng i thu c m gam cht rn. Gi tr ca m l: A. 2,4 g B. 3,2 g C. 4,4 g D. Kt qu khc. 10. Cho hn hp X gm 0,08 mol mi kim loi Mg, Al, Zn vo dung dch H 2SO4 c, nng, d thu c 0,07 mol mt sn phm kh duy nht cha lu hunh. Xc nh sn phm kh. A. SO2 B. S C. H2S D. Khng xc nh c 11. Cho s chuyn ho sau:+ H2 xt,t tr ng h p X Y Z Cao su Buna H O Ni / to2 o

Cng thc cu to hp l ca X l: A. C.

HO CH2 C C CH2 OH H C CH = CH = C H O||

B.

CH2OH CH CH CHO

O

||

D. C A, B, C u ng

12. Cho 4,2 g hn hp gm Mg v Zn tc dng ht vi dung dch HCl, thy thot ra 2,24 lt H2 (ktc). Khi lng muikhan to ra trong dung dch l:A. 7,1 g B. 7,75g C. 11,3 g D. Kt qu khc 13. Cho 2,98 g hn hp X gm hai kim loi Zn v Fe vo 200 ml dung dch HCl, sau khi phn ng hon ton ta c cn (trong iu kin khng c Oxi) th c 5,82 g cht rn. Tnh th tch H2 bay ra (ktc)? A. 0,224 lt B. 0,448 lt C. 0,896 lt D. Kt qu khc. 14. Ho tan 9,14 g hn hp Cu, Mg, Al bng dung dch HCl d thu c 7,84 lt kh A (ktc) v 2,54 g cht rn B v dung dch C. Tnh khi lng mui c trong dung dch C? A. 3,99 g B. 33,25 g C. 31,45 g D. Kt qu khc. 15. Dung dch NaOH c phn ng vi tt c cc cht trong dy no sau y? A. FeCl3, MgCl2, CuO, HNO3, NH3, Br2 B. H2SO4, CO2, SO2, FeCl2, FeCl3, NO2, Cl2

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C. HNO3, HCl, CuSO4, KNO3, ZnO, Zn(OH)2 D. Al, Al2O3, MgO, H3PO4, MgSO4, MgCl2 16. Dung dch H2SO4 long phn ng c vi tt c cc cht trong dy no sau y? A. FeCl3, MgO, Cu, Ca(OH)2, BaCl2 B. Ba(NO3)2, Na2CO3, (NH4)2SO4, NaOH C. Zn, Fe, (NH4)2CO3, CH3COONa, Ba(OH)2 D. Al, Fe, BaO, BaCl2, NaCl, KOH 17. C bn dung dch ng bn l mt nhn: NH4Cl, (NH4)2SO4, Na2SO4, NaOH. Nu ch c dng mt thuc th nhn bit bn cht lng trn, ta c th dng dung dch no sau y? A. AgNO3 B. BaCl2 C. Ba(OH)2 D. KOH 18. Cho 16,2 g kim loi M(ho tr n khng i) tc dng vi 0,15 mol O 2. Ho tan cht rn sau phn ng bng dung dch HCl d thy bay ra 13,44 lt H2(ktc). Xc nh kim loi M? A. Ca B. Mg C. Fe D.Al 19. Mt lng cht thi dng dung dch c cha cc ion Cu2+, Fe3+, Hg2+, Zn2+, Pb2+. Dng cht no sau y loi b cc ion trn?A. Gim n B. Nc mui n C. Nc vi d D. Axit Nitric 20. Ha tan hon ton 19,2 g Cu vo dung dch HNO 3 long. Kh NO thu c em oxi ha thnh NO2 ri sc vo nc cng vi dng kh O2 chuyn ht thnh HNO3. Tnh th tch kh O2(ktc) tham gia vo qu trnh trn? A. 2,24 lit B. 3,36 lt C. 4,48 lt D. 6,72 lt 21. Mui CuSO4 khan dng lm kh kh no sau y? A. NH3 B. H2S C. SO2 D. C A, B, C 22. Khi ly 14,25 g mui clorua ca mt kim loi M ch c ho tr II v mt lng mui nitrat ca M vi s mol nh nhau, th thy khi lng khc nhau l 7,95 g. Cng thc ca hai mui l: A. MgCl2, Mg(NO3)2 B. CaCl2, Ca(NO3)2 C. ZnCl2, Zn(NO3)2 D. CuCl2, Cu(NO3)2 23. Ly 224 th tch kh HCl (ktc) ha tan vo mt th tch nc . Tnh nng C% dung dch axit HCl to thnh? A. 2,67% B. 26,7% C. 34,2% D. Khng xc nh c 24. Thi mt lung kh CO qua ng s ng m gam hn hp gm Al2O3, MgO, Fe2O3, FeO, CuO nung nng. Kh thot ra c sc vo nc vi trong d thu c 15 g kt ta trng. Sau phn ng cht rn trong ng s c khi lng 200 g. Tnh m?A. 202,4 g B. 217,4 g C. 219,8 g D. Kt qu khc. 25. Ho tan 4,59 g Al bng dung dch HNO3 long thu c hn hp kh gm NO v N2O c t khi hi so vi hiro bng 16,75. T l th tch N2O/NO l:

1 2 3 3 B. C. D. E. Kt qu khc 3 3 1 2 26. C hai ming kim loi A c cng khi lng, mi ming tan hon ton trong dung dch HCl v dung dch H 2SO4 c ,5.VH2 cng iu kin). Khi lng mui clorua bng 63,5% khi lng mui nng thu c kh H2 v SO2 ( VSO2 = 1A. sunfat. Kim loi A l. A. Fe B. Mg C. Al D. Zn. 27. C hai ng nghim ng mi ng 2 ml dung dch HCl 1M v 2 ml dung dch H2SO4 1M. Cho Zn tc dng vi hai axit trn, lng kh hiro thu c trong hai trng hp tng ng l V1 v V2 ml (ktc). So snh V1 v V2 ta c: A. V1 > V2 B. V1 = V2 C. V1 < V2 D. Khng so snh c 28. Cht no sau y va phn ng c vi dung dch HCl, va phn ng c vi dng dch NaOH? A. NH4NO3 B. (NH4)2CO3 C. Na2CO3 D. Na2SO4 29. Hn hp A gm Cu, Fe c t l khi lng m Cu : mFe = 7 : 3. Ly m gam A cho phn ng hon ton vi 44,1 g HNO 3 trong dung dch thu c 0,75.m gam cht rn, dung dch B v 5,6 lt kh C gm NO v NO2 (ktc). Tnh m? A. 40,5 g B. 50 g C. 50,2 g D. 50,4 g. 30. Cho 12,9 g hn hp gm Al v Mg phn ng ht vi 100 ml dung dch hn hp hai axit HNO 3 4M v H2SO4 7M (m c) thu c 0,1 mol mi kh SO2, NO, N2O. Tnh s mol tng kim loi trong hn hp ban u? A. 0,2 mol Al v 0,3 mol Mg. B. 0,2 mol Mg v 0,3 mol Al. C. 0,1 mol Al v 0,2 mol Mg. D. 0,2 mol Al v 0,1 mol Mg. 31. Thuc th no sau y c th phn bit c bn dung dch: AlCl3, FeCl3, CuCl2, ZnSO4 ? A. dd NaOH B. dd Ba(OH)2 C. dd Ba(NO3)2 D. Qu tm 32. Khng dng thm mt ho cht no khc, c th phn bit c bao nhiu dung dch trong 5 dung dch ring bit sau: NaOH, KCl, MgCl2, CuCl2, AlCl3? A. 2 B. 3 C. 4 D. 5 33. Hn hp A gm Al 2O3, MgO, Fe3O4 , CuO. Cho kh CO d qua A nung nng c cht rn B. Ho tan B vo dung dch NaOH d c dd C v cht rn D. Cht rn D gm: A. MgO, Fe, Cu B. MgO, Fe, CuO C. MgO, Fe3O4 , Cu D. Al2O3, MgO, Fe3O4 34. Hn hp A gm BaO, FeO, Al2O3. Ho tan A trong lng d H2O c dd D v phn khng tan B. Sc kh CO2 d vo D to kt ta. Cho kh CO d qua B un nng c cht rn E. Cho E tc dng vi NaOH d thy tan 1 phn cn li l cht rn G. Cht rn G l: A. Ba B. Fe C. Al D. Kt qu khc 35. Cho dy bin ho sau: HCl Al NaOH C +Y+ Z Cc cht B, C, D, E ln lt l: A. AlCl3, NaAlO2, Al2O3, Al(OH)3 B +X +Z D t0 E pnc Al. B. Al(OH)3, AlCl3, NaAlO2, Al2O3

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C NaAlO2,. AlCl3, Al(OH)3, Al2O3 D. AlCl3, NaAlO2, Al(OH)3, Al2O3 36. Nung 6,58g Cu(NO3)2 trong bnh kn sau 1 thi gian thu c 4,96g cht rn v hn hp kh X . Hp th hon ton hn hp X vo nc c 300ml dung dch Y. Tnh pH ca dung dch Y. A. pH= 1 B. pH= 2 C. pH= 12 D. pH=13 37. Khi nung hn hp FeS2 v FeCO3 trong khng kh thu c 1 oxit v kh B1, B2 . T l khi lng phn t ca B1 v B2 l 11:16 . 2 kh B1 v B2 ln lt l: A. SO2 v CO2 B. CO2 v SO2 C. CO v SO2 D. Kt qu khc. 38. Nhit phn 1 lng CaCO3 sau 1 thi gian c cht rn A v kh B , cho B hp th hon ton vo dd KOH thu c dd D . D tc dng c vi dung dch BaCl2 v vi dd NaOH. dung dch D cha: A. KHCO3 B. K2CO3 C. K2CO3 v KHCO3 D. Kt qu khc 39. Cho cc s phn ng sau: p dd, Mn xt a) X1 + H2O X2 + X3 + H2 b) X2 + X4 BaCO3 + K2CO3 + H2O c) X2 + X3 X1 + KClO3 + H2O d) X4 + X5 BaSO4 + CO2 + H2O X1, X2 , X3 , X4 , X5 ln lt l: A. KOH, KCl, Cl2, Ba(HCO3)2, H2SO4 B. KCl, KOH, Cl2, Ba(HCO3)2, H2SO4 C. KCl, KOH, Cl2, H2SO4, Ba(HCO3)2 D. KCl, Cl2, Ba(HCO3)2, H2SO4, KOH 40. Hn hp gm Na v Al. Cho m g X vo mt lng d nc th thot ra Vlit kh. Nu cng cho m gam X vo dd NaOH(d) th c 1,75V lit kh. Thnh phn % khi lng ca Na trong X l: A. 39,87% B. 77,31% C. 49,87% D. 29,87% 41.nung 13,4 gam hn hp 2 mui cacbonat ca hai kim loi ho tr 2, thu c 6,8 gam cht rn v kh X. lng kh X sinh ra cho hp th vo 75 ml dd naOH 1M, khi lng mui khan thu c sau phn ng l: A. 5,8 g B. 6,5 g C. 4,2 g D. 6,3 g 42. Khi cho Cu tc dng vi dung dch H2SO4 long v NaNO3, vai tr ca NaNO3 trong phn ng l: A. Cht xc tc B. Cht Oxi ho C. Mi trng D. Cht kh. 43. Hn hp X cha Na2O, NH4Cl, NaHCO3 v BaCl2 c s mol mi cht u bng nhau. Cho hn hp X vo H2O(d), un nng, dung dch thu c cha: A. NaCl, NaOH, BaCl2 B. NaCl, NaOH C. NaCl, NaHCO3, NH4Cl, BaCl2 D. NaCl. 44. Thc hin hai th nghim: 1. Cho 3,84 g Cu phn ng vi 80ml dd HNO3 1M thot ra V1 lit kh NO. 2. Cho 3, 84 g Cu phn ng vi 80ml dd HNO3 1M v H2SO4 0,5 M thot ra V2 lit NO. Bit NO l sn phm kh duy nht, cc th tch kh o cng iu kin. Quan h gia V1 v V2 l: A. V2=V1 B. V2=2V1 C. V2=2,5V1 D. V2=1,5V1 45. trong cc dd: HNO3, NaCl, Na2SO4, Ca(OH)2, KHSO4, Mg(NO3)2, dy gm cc cht u tc dng c vi dung dch Ba(HCO3)2 l: A. HNO3, NaCl, Na2SO4 B. HNO3, Na2SO4, Ca(OH)2, KHSO4 C. NaCl, Na2SO4, Ca(OH)2 D. HNO3, Ca(OH)2, KHSO4, Mg(NO3)2 46. C th phn bit ba dd: KOH, HCl, H2SO4 long bng mt thuc th l: A. Giy qu tm B. Zn C. Al D. BaCO3 47. nhn bit ba axit c ngui: HCl, H2SO4, HNO3 ng ring bit trong ba l mt nhn ta dng thuc th l: A. Fe B. CuO C. Al D. Cu 48. Ho tan hon ton 2,81 g hn hp gm: Fe2O3, MgO, ZnO trong 500 ml dung dch H2SO4 0,1M (va ). Sau phn ng hn hp mui sunfat khan thu c khi c cn dd c khi lngl: A. 6,81 g B. 4,81 g C. 3,81 g D. 5,81 g 49. Cho mg hh bt Zn v Fe vo lng d dd CuSO4. Sau khi kt thc cc p, lc b phn dd thu c mg bt rn. Thnh phn% theo khi lng ca Zn trong hh ban u l: A. 90,27% B. 85,30% C. 82,20% D. 12,67% 50. t mt kim loi trong bnh kn ng kh clo, thu c 32,5g mui clorua v nhn thy th tch kh clo trong bnh gim 6,72 lt ( ktc). Hy xc nh tn ca kim loi dng. a. ng b. Nhm c. Canxi d. St 51. X l 10 g hp kim nhm bng dung dch NaOH c nng (d), ngi ta thu c 11,2 lt kh H2 (ktc). Hy cho bit thnh phn % ca nhm trong hp kim a. 85% b. 90% c. 95% d. Kt qu khc 52. Hai kim loi A v B c ho tr khng i l II.Cho 0,64 g hn hp A v B tan hon ton trong dung dch HCl ta thy thot ra 448 ml kh (ktc). S mol ca hai kim loi trong hn hp l bng nhau. Hai kim loi l: a. Zn, Cu b. Zn, Mg c. Zn, Ba d. Mg, Ca 53. Ho tan hon ton 1,45 g hn hp 3 kim loi Zn, Mg, Fe vo dung dch HCl d, thy thot ra 0,896 lt H 2 (ktc). un khan dung dch ta thu c m gam mui khan th gi tr ca m l: a. 4,29 g b.2,87 g c. 3,19 g d. 3,87 g 54. Ho tan hon ton 4,68 g hn hp mui cacbonat ca hai kim loi A, B k tip nhau trong nhm IIA vo dung dch HCl thu c 1,12 lt kh CO2 ( ktc). Hai kim loi A, B ln lt l: a. Mg v Ca b. Be v Mg c. Ca v Sr d. Sr v Ba

27

55. Khi cho 17,4 g hp kim gm st, ng, nhm phn ng vi H 2SO4 long d ta thu c dung dch A; 6,4 g cht rn; 9,856 lt kh B ( 27,30C v 1 atm). Phn trm khi lng mi kim lai trong hp kim Y l: a. Al: 30%; Fe: 50% v Cu: 20% b. Al: 30%; Fe: 32% v Cu 38% c. Al: 31,03%; Fe: 32,18% v Cu: 36,79% d. Al: 25%; Fe: 50% v Cu: 25% 56Khi ly 14,25 gam mui clorua ca 1 kim loi ch c ha tr II v mt lng mui nitrat ca kim loi vi smol nh nhau thy khi lng khc nhau 7,95gam. Cng thc ca 2 mui l: A.SrCl2 v Sr(NO3)2 B.CaCl2 v Ca(NO3)2 C.MgCl2 v Mg(NO3)2 D.BaCl2 v Ba(NO3)2 57 -Nhit phn 67,525 g hn hp hai mui rn bari cacbonat v bari sunfit sau phn ng xy ra hon ton phn cht rn cn li c khi lng 49,725 gam. Phn cht kh thu c c t khi so vi H2 l: A.26,615. B.29,735. C.27,385. D.27,000 58Ha tan 115,3 gam hn hp gm MgCO3 v XCO3 bng dung dch H2SO4 long thu c dung dch Y, cht rn Z v 4,48 lt CO2 ( ktc). C cn dung dch Y thu c 12 gam mui khan. Vy cht rn Z c khi lng l: A.108,5 gam. B.104,5 gam. C.102,5 gam. D.110,5 gam IV. S T, NG , CROM, CC KIM LO I KHC TI LI U N THI : CHUYN S T PH N 1: L THUY T Cu 1: Nguyn t X c in tch ht nhn l 26. Cu hnh electron ca X, chu k v nhm trong h thng tun hon ln lt l: A.1s2 2s22p63s23p63d6 , chu k 3 nhm VIB . B. 1s2 2s22p63s23p63d6 4s2 , chu k 4 nhm IIA . 2 2 6 2 6 5 C.1s 2s 2p 3s 3p 3d , chu k 3 nhm VB . D. 1s2 2s22p63s23p63d6 4s2 , chu k 4 nhm VIIIB Cu 2.H s ng trc FeCl2; FeCl3 phn ng FexOy + HCl FeCl2 + FeCl3 + H2O cn bng s nguyn t cc nguyn t l: A.(y-x); (3x-2y) B.(2x-3y); (2x-2y) C.3x-y); (2y-2x) D. (3x-2y); (2y-2x) Cu 3.Xem phn ng: FeS2 + H2SO4(, nng) Fe2(SO4)3 + SO2 + H2O A.FeS2 b oxi ha to Fe2(SO4)3 B.FeS2 b oxi ha to Fe2(SO4)3 v SO2 C.H2SO4 b oxi ha to SO2 D.H2SO4 oxi ha FeS2 to Fe3+ v SO42Cu 4.C bao nhiu phn ng xy ra khi cho cc cht sau tc dng vi nhau: FeCl2 + Cu, FeCl2 + Br2, FeCl2 + NaOH, FeCl2 + Na2S, FeCl2 + H2S, Fe(NO3)2 + AgNO3, FeCl3 + Fe, FeCl3 + Cu, FeCl3 + H2S, FeCl3 + AgNO3. A.8 B.7 C.6 D.5 Cu 5.Cu hnh electron no sau y l ca ion Fe3+ (Z = 26) : A.1s22s22p63s23p63d6 B.1s22s22p63s23p63d5 C.1s22s22p63s23p63d64s2 2 2 6 2 6 6 1 D.1s 2s 2p 3s 3p 3d 4s Cu 6.Cho hn hp Fe v Cu vo dd HNO3 khuy k phn ng xy ra hon ton. thu c dd ch cha mui st II cn ly: A.d Fe B.HNO3 long C.d Cu D.d HNO3 Cu 7.Cho hn hp Fe v Cu vo dd HNO3 long, sau khi phn ng xy ra hon ton thy dd ch cha 1 cht tan. Cht tan l? A.Fe(NO3)3 B.HNO3 C.Fe(NO3)2 D.Cu(NO3)2 Cu 8.Hy cho bit phn ng no sau y l mt trong nhng phn ng xy ra trong qu trnh luyn thp? A.CO + 3Fe2O3 (to cao) 2Fe3O4 + CO2 B.Mn + FeO (to cao) MnO + Fe o C.CO + Fe3O4 (t cao) 3FeO + CO2 D.CO + FeO(to cao) Fe + CO2 Cu 9.Trong cc cp kim loi sau: (1) Mg, Fe (2) Fe, Cu (3) Fe, Ag . Cp kim loi khi tc dng vi dung dch HNO3 c th to ra dung dch cha ti a 3 mui ( khng k trng hp to NH4NO3) l: A.(1) B.(1) v (2) C.(2) v (3) D.(1) v (2) v (3) Cu 10.Khi cho hn hp Fe2O3 v Cu vo dung dch H2SO4 long d thu c cht rn X v dung dch Y. Dy no di y gm cc cht u tc dng c vi dung dch Y? A.Br2, NaNO3, KMnO4 B.KI, NH3, NH4Cl C.NaOH, Na2SO4, Cl2 D.BaCl2, HCl, Cl2 Cu 11.Cho bit hin tng xy ra khi trn ln cc dung dch FeCl3 v Na2CO3. A.Kt ta trng v si bt kh B.Kt ta trng xanh sau chuyn dn sang kt ta nu v si bt kh C.Kt ta nu, sau tan D.Kt ta nu v si bt kh Cu 12.Cho bit cc phn ng xy ra sau : 2FeBr2+Br2 2FeBr 3 2NaBr+Cl2 2NaCl+Br 2 Pht biu ng l : A.Tnh oxi ha ca Cl2 mnh hn ca Fe3+ B.Tnh kh ca Br mnh hn ca Fe2+ C.Tnh oxi ho ca Br2 mnh hn ca Cl2 D.Tnh kh ca Cl- mnh hn ca Br 2+ Cu 13.Mui Fe lm mt mu dung dch KMnO4 mi trng axit cho ra ion Fe3+ cn ion Fe3+ tc dng vi I cho ra I2 v Fe2+. Sp xp cc cht oxi ha Fe3+, I2, MnO4 theo th t mnh tng dn : A.I2 < MnO4 < Fe3+ B.MnO4 < Fe3+ < I2 C.Fe3+ < I2 < MnO4 D.I2 < Fe3+ < MnO4 Cu 14.Cho hn hp Al v Fe tc dng vi dung dch cha ng thi AgNO3 v Cu(NO3)2 thu c dung dch B v cht rn D gm 3 kim loi. Thnh phn cht rn D gm: A.Fe, Cu v Ag B.Al, Fe v Ag. C.Al, Fe v Cu. D.Al, Cu v Ag. Cu 15.Phn ng no sau y KHNG phi phn ng oxi ho - kh : A.Fe + H2SO4 B.2FeO + 4H2SO4 , nong C.6FeCl 2 + 3Br2 D.Fe3O4 + 4H2SO4 loang Cu 16.Cho tng cht: Fe, FeO, Fe(OH)2, Fe(OH)3, Fe3O4, Fe2O3, Fe(NO3)2, FeCO3, FeSO4, FeS, ln lt phn ng vi HNO3 c, nng. S phn ng thuc loi phn ng oxi ho - kh l A.6 B.5 C.8 D.7

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Cu 17.Cho mt t bt Fe vo dd HNO3 long, khi phn ng xy ra hon ton thu c dd A. Kt lun no sau y l khng ng v dd A? A.dd A c th cha ion Fe3+, H+ v NO3-. B.dd A c th cha ion 2+ + 3Fe , H v NO . C.dd A c th cha ion Fe2+ v NO3-. D.dd A c th cha ion Fe2+, Fe3+ v NO3-. Cu 18.Loi phn ng no sau y khng xy ra trong qu trnh luyn gang? A.Phn ng to x. B.phn ng to cht kh kh. C.phn ng oxi ho Mn, Si, P, S. D.Phn ng kh oxit st thnh st. Cu 19.Nhn xt v kh nng phn ng ca dd mui st (III) vi cc kim loi trong dy in ho th iu khng ng l: A.ion Fe3+ b cc kim loi t Fe n Cu kh thnh Fe2+. B.ion Fe3+ khng oxihoa c cc kim loi Ag tr i. C.cc kim loi t Mg n Zn kh c Fe3+ thnh Fe2+ hoc Fe. D.ion Fe3+oxihoa c tt c cc kim loi t K n Cu. Cu 20.Cho dy bin ha sau: Mi mi tn l mt phng trnh phn ng. Trong cc p n sau y A, B, C, D theo th t l cc cht tng ng. Hy chn p n sai. A.Fe3O4; FeCl2; FeCl3; Fe(NO3)3 B.FeO; Fe2(SO4)3; FeSO4; Fe(NO3)3 C.Fe3O4; Fe(NO3)2; Fe(NO3)3; Fe(OH)3 D.FeO; FeSO4; Fe2(SO4)3; Fe(OH)3 Cu 21.Trong cc phn ng sau, phn ng no sai? A.Fe + Cl2 --> FeCl2 B.Fe + 2HCl --> FeCl2 + H2 C.Cu + Fe2(SO4)3 --> 2FeSO4 + CuSO4 D.Fe + Fe2(SO4)3 --> 3FeSO4 Cu 22.Cho Cu vo dung dch Fe2(SO4)3 ta thu c dung dch c mu xanh lam nht. l do xy ra phn ng: A.Cu + Fe2(SO4)3 CuSO4 + Fe. B.Cu + Fe2(SO4)3 CuSO4 + FeSO4. C.Cu + 1/2 O2 + H2O Cu(OH)2 D.Cu(OH)2 + Fe2(SO4)3 CuSO4 + 2FeSO4 + H2O2 Cu 23.Trong hai cht FeSO4 , Fe2(SO4)3 cht no phn ng c vi dung dch KI , dung dch KMnO4 trong mi trng axit ? A.FeSO4 vi dung dch KMnO4; Fe2(SO4)3 vi KI . B.FeSO4 v Fe2(SO4)3 u tc dng vi KMnO4 . C.FeSO4 v Fe2(SO4)3 u tc dng vi KI . D.FeSO4 vi dung dch KI ; Fe2(SO4)3 vi KMnO4 . Cu 24.Cho cc cht v hn hp sau:(I)Cl 2, (II)I2, (III)HNO3, (IV)H2SO4 c, ngui, (V) hn hp axit HCl v mui NaNO3. Khi cho Fe tc dng vi cht no trong s cc cht trn th to c cht trong st c ho tr III. A.(I), (II). B.(I), (III), (V). C.(I), (II), (III). D.(I), (III), (IV). Cu 25.Cho oxit st FexOy tc dng vi dung dch axit H2SO4 c, nng thu c mt sn phm kh c th lm mt mu cnh hoa hng. Cng thc ho hc no khng th l ca loi oxit st ni trn ? A.Fe2O3 B.Fe3O4 C.FeO D.B v C ng. Cu 26.Mt loi qung cha st trong t nhin c loi b tp cht. Ho tan qung ny trong dung dch axit nitric thy c kh mu nu bay ra,dung dch thu c cho tc dng vi bari clorua thy c kt ta trng ( khng tan trong axit).Hy cho bit tn, thnh phn ho hc ca qung ? A.Xierit FeCO3 B.Manhetit Fe3O4. C.Hematit Fe2O3 D.Pirit FeS2 Cu 27.Mt loi qung st loi tp cht ha tan trong dung dch H2SO4 long d thu c mt dung dch va lm mt mu thuc tm va ha tan bt Cu.Tn ca qung l: A.Pirit FeS2 B.Manhetit Fe3O4 C.Xiderit FeCO3 D.Hematit Fe2O3 Cu 28.Cho Fe tan ht trong HNO3 long thnh dung dch A. Chia dung dch A thnh hai phn bng nhau: cho bt Cu vo phn 1, Cu tan dn. Cho dung dch AgNO3 vo phn 2 th thy c kt ta xut hin. Vy dung dch A gm cc cht: A.HNO3 v Fe(NO3)3 B.HNO3, Fe(NO3)2 v Fe(NO3)3 C.Fe(NO3)2 v Fe(NO3)3 D.HNO3 v Fe(NO3)2 Cu 29. phn bit Fe2O3 v Fe3O4 ta dng dung dch: A.H2SO4 long B.HNO3 C.HCl D.NaOH Cu 30.Dng thuc th no sau y c th phn bit c dung dch Fe2(SO4)3 v dung dch Fe2(SO4)3 c ln FeSO4? A.Dung dch Ba(OH)2 B.Dung dch NH3 C.Dung dch NaOH D.Dung dch KMnO4/H2SO4 Ph n 2: Bi t p Bi 1 Cho m gam st phn ng va ht vi axit sunfuric thu c kh A duy nht v 10,56 gam mui. S mol st bng 40,0 % s mol axit sunfuric dng. Vy gi tr ca m l: A.2,52 gam B.3,92 gam C.3,36 gam D.2,80 gam Bi 2 m gam bt Fe trong khng kh sau mt thi gian thu c 19,2 gam hn hp B gm Fe, FeO, Fe2O3, Fe3O4. Cho B vo dd HNO3 long khuy k phn ng hon ton thy B tan ht thu c dd X cha 1 mui v 2,24 lit NO (ktc). Hi m c gi tr no sau y? A.11,2 g B.15,4 g C .16,8 g D.8,4 g Bi 3 t m gam st trong bnh cha 3,36 lit kh clo (ktc), sau khi phn ng kt thc cho nc vo bnh lc k thy cht rn tan hon ton. Thm tip dd NaOH d vo thu c cht kt ta, tch kt ta ngoi khng kh nhn thy khi lng kt ta tng thm 1,02 gam. Tnh m? A.10,08 g B.2,8 g C.4,2 g D.6,72 g Bi 4 T 1 tn qung hematit A iu ch c 420 kg Fe. T 1 tn qung manhetit B iu ch c 504 kg Fe. Vy phi trn hai qung trn vi t l khi lng (mA : mB) l bao nhiu c 1 tn qung hn hp m t 1 tn qung hn hp ny iu ch c 480 kg Fe: A.1 : 3 B.2 : 5 C.2 : 3 D.3 : 5

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Bi 5 Cn bao nhiu tn qung manhetit cha 80% Fe3O4 luyn c 800 tn gang c cha 5% C v tp cht. Bit lng Fe b hao ht khi sn xut l 1% A.1235,16 tn B.1325,16 tn C.1253,16 tn D.1316,25 tn Bi 6 Ngm 8,4g Fe trong 400 ml dung dch HNO3 1M kt thc phn ng thu c dung dch A v kh NO. Khi lng cht tan c trong dung dch A l: A.24,2 g B.27,0 g C.23,5 g D.37,5 g Bi 7 kh hon ton 3,04 gam hn hp Y (gm FeO, Fe3O4, Fe2O3) th cn 0,05 mol H2. Mt khc ho tan hon ton 3,04 gam hn hp Y trong dung dch H2SO4 c th thu c th tch kh SO2 (sn phm kh duy nht) iu kin tiu chun l: A.224 ml B.448 ml C.336 ml D.112 ml Bi 8 Gi s gang cng nh thp ch l hp kim ca St vi Cacbon v St ph liu ch gm St, Cacbon v Fe2O3. Coi phn ng xy ra trong l luyn thp Martin l: Fe2O3 + 3C2 Fe + 3CO . Khi lng St ph liu (cha 40% Fe2O3, 1%C) cn dng khi luyn vi 4 tn gang 5%C trong l luyn thp Martin, nhm thu c loi thp 1%C, l: A.1,50 tn B.2,93 tn C.2,15 tn D.1,82 tn Bi 9 Cho 2,236 gam hn hp A dng bt gm Fe v Fe3O4 ha tan hon ton trong 100ml dung dch HNO3 c nng C (mol/l), c 246,4 l kh NO (ktc) thot ra. Sau phn ng cn li 0,448 gam kim