THI HC K II MN HO

CHUYN L THUYT KIM LOI

PHN 1: I CNG V KIM LOI

1. Cc ion Na+, Mg2+, Al3+c cc c im chung no sau y ?

A. C cng s electron

B. C cng s proton

C. u b kh khi in phn dung dch mui clorua

D. u to lin kt ion vi anion oxit to thnh cc oxit baz

2. Cu hnh electron no sau y l ca Cr (Z = 24) ?

A. 1s22s22p63s23d4

B. 1s22s22p63s23p63d54s1C. 1s22s22p63s23p64s23d44s2

D. 1s22s22p63s33p64s13d53. Cho Ca (Z = 20). Cu hnh ca ion Ca2+l

A. 1s22s22p63s23p6

B. 1s22s22p6

C. 1s22s22p63s23p64s2

D. 1s22s22p63s23p64s24p24. Cho cc nguyn t c cu hnh electron lp ngoi cng tng ng l X : 2s22p5; Y : 4s1; Z : 5s25p2; T : 2s22p2 ; R : 3s23p6.

Cc nguyn t kim loi l

A. Y ; Z

B. Y

C. X ; Z ; T

D. R

5. Trong s cc ion sau, ion no khng c cu hnh electron ca kh him ?

A. Zn2+

B. Al3+

C. K+

D. Cl-6. Kim loi vonfam c dng lm dy tc bng n v nhng nguyn nhn chnh no sau y ?

A. L kim loi rt cng.

B. L kim loi rt mm.

C. L kim loi c nhit nng chy rt cao. D. L kim loi c khi lng phn t ln.

7. Kim loi c tnh do, dn in, dn nhit, c nh kim u gy ra bi

A. cc electron t do trong mng tinh th kim loi.B. kim loi c cu to mng tinh th.

C. ion kim loi.

D. cc nguyn t kim loi.

8. Tng h s (cc s nguyn ti gin) trong phng trnh ho hc ca phn ng gia Al vi HNO3 c nng l

A. 9

B. 13

C. 14

D. 64

9. Phn ng ca kim loi Zn vi dung dch H2SO4 long c phng trnh ion thu gn l

A. Zn + 2H+ Zn2+ + H2

B. Zn + 2H+ + SO42- ZnSO4 + H2 C. Zn + 4H++ SO42- Zn2+ + SO2 + 2H2OD. Zn + SO42- ZnSO410. Trong cc trng hp sau, trng hp no c th ho tan hon ton cht rn ?

A. Cho hn hp Cu, CuO vo dung dch H2SO4 long.

B. Cho hn hp Cu, Fe, Sn vo dung dch FeCl3.

C. Cho hn hp Al, Fe vo dung dch HNO3 c ngui.

D. Cho hn hp Na, Mg vo H2O.

11. Cho mt inh st vo dung dch CuSO4 (mu xanh) thy c hin tng X. Cho mt mu Na vo dung dch CuSO4(mu xanh) thy c hin tng Y. X v Y ln lt l

A. X : dung dch mt mu xanh, c kt ta bm trn inh st ; Y : c bt kh, kt ta xanh.

B. Dung dch mt mu xanh, c kt ta xanh bm trn inh st ; Y : c bt kh, kt ta .

C. Dung dch mt mu xanh, c kt ta bm trn inh st ; Y : dung dch mt mu xanh, c kt ta .

D. Dung dch mt mu xanh, c kt ta xanh bm trn inh st ; Y : dung dch mt mu xanh, c kt ta xanh.

12. Mt hn hp c Cu, CuO, Cu(OH)2. Dng ho cht no sau y chng minh c trong hn hp c Cu ?

A. H2SO4c

B. H2SO4 long

C. AgNO3D. Cc cht H2SO4 c, H2SO4 long, AgNO3 u dng c

13. Phn ng ho hc gia hai cp oxi ho-kh s xy ra theo chiu :

A. Cht kh s tc dng vi cht oxi ho to thnh cht kh v cht oxi ho tng ng ca chng.

B. Cht kh ca cp c th in cc chun nh hn s tc dng vi cht oxi ho ca cp c th in cc

chun ln hn to thnh cht oxi ho ca cp c th in cc chun nh hn v cht kh ca cp c th in cc chun ln hn.

C. Cht kh ca cp c th in cc chun ln hn s tc dng vi cht oxi ho ca cp c th in cc chun nh hn to thnh cht oxi ho ca cp c th in cc chun ln hn v cht kh ca cp c th in cc chun nh hn.

D. Lm cho s oxi ho ca cht kh cp c th in cc chun ln hn tng, s oxi ho ca cht oxi ho c th cc chun nh hn gim.

Th t tnh kh ca cc kim loi tng dn theo chiu :

A. Ag < Cr < Ni < Sn

B. Ag < Sn < Ni < Cr

C. Cr < Ni < Sn < Ag

D. Sn < Ni < Cr < Ag

14. Cho cc cp oxi ho kh c sp xp theo th t tng dn th in cc chun nh sau :

Mg2+/Mg ; Fe2+/Fe ; Cu2+/Cu ; Fe3+/Fe2+ ; Ag+/Ag. Kim loi no khng tc dng c vi dung dch mui Fe3+?

A. Mg

B. Fe

C. Cu

D. Ag

15. Nhng dung dch no sau y khng ho tan c Cu ?

A. Dung dch mui Fe3+

B. Dung dch HNO3 long

C. Dung dch mui Fe2+

D. Dung dch hn hp HCl v NaNO316. Cho hn hp bt 2 kim loi Fe v Cu vo dung dch AgNO3 sau phn ng thu c hn hp rn gm 2 kim loi. Dung dch sau phn ng gm cc cht

A. Fe(NO3)3 v AgNO3

B. Fe(NO3)3 v Cu(NO3)2C. AgNO3 v Cu(NO3)2

D. Fe(NO3)2 v Cu(NO3)217. Trong qu trnh pin in ha Zn -Cu hot ng, s xy ra bin i no sau y?

A. Khi lng in cc Zn tng

B. Khi lng in cc Cu gim

C. Nng ca ion Zn2+trong dung dch tngD. Nng ion Cu2+trong dung dch tng.

18. Trng hp no sau y xy ra s n mn ho hc ?

A. Tn (st trng km) ngoi khng kh m (c vt sy st su ti lp st bn trong).

B. Si dy ng ni vi mt si dy nhm ngoi khng kh m.

C. V tu bin tip xc vi nc bin.

D. Thit b bng thp trong l t tip xc vi hi nc nhit cao.

19. bo v v tu bin lm bng thp, ngi ta gn vo v tu (phn ngm di nc) nhng tm kim loi lm bng cht no sau y ?

A. ng

C. Gang

B. Km

D. Thit20. in phn dung dch cha hn hp x mol CuSO4 v y mol NaCl (in cc tr, mng ngn xp), dung dch sau in phn cho tc dng vi Fe thy gii phng hiro. Vy

A. y = 2x B. y > 2xC. y < 2x D. y = 3x

21. Trong pin in ho Zn-Cu, tc dng ca cu mui l

A. Cho php 2 dung dch pha trn vi nhau

B. Cho php cc ion dng di chuyn qua li gia hai ngn

C. Cho php ion dng v ion m di chuyn qua li 2 ngn

D. Cho php dng in chuyn ngc chiu kim ng h

22. Khi pin in Zn-Cu hot ng, phn ng no sau y xy ra catot ?

A. Cu2+ + 2e Cu

B. Zn2+ + 2e Zn C. Cu Cu2+ + 2e

D. Zn Zn2+ + 2e

23. Thit lp pin in ho c ghp bi hai cp oxi ha - kh chun : Al3+/ Al v Fe2+/ Fe. Cho bit Sc in ng chun ca pin l

A. +2,1V

B. -2,1V

C. +1,22V

D. -1,22V

24. Bit . Sut in ng chun ca pin in ho Sn-Ag l

A. +0,66V

B. +0,94V

C. +0,79V

D. +1,09V

25. Sut in ng chun ca pin in ho Cr(-) - Ni(+) l +0,48V v . Th in cc chun ca Cr3+/Cr l

A. +0,74V

B. -0,28V

C. +0,28V

D. -0,74V

26. Cho bit qu trnh Sn Sn2+ + 2e xy ra khi ghp in cc Sn vi in cc no sau y ?

A. Cc Cu

B. Cc Zn

C. Cc Fe

D. Cc Mg

27. Khi cho hn hp bt kim loi gm Zn, Ni, Mg v Fe vo dung dch CuSO4 th kim loi phn ng u tin l

A. Zn

B. Ni

C. Mg

D. Fe

28. Khi cho bt kim loi Mg vo dung dch cha cc ion sau y: Cu2+; Fe3+; Ag+ ; NO3-, ion no s oxi ho Mg u tin ?

A. Cu2+

B. Fe3+

C. Ag+

D. NO3-29. Khi ho tan Zn bng dung dch H2SO4 long, nu thm vi git dung dch CuSO4vo th qu trnh ho tan s

A. xy ra nhanh hn. B. khng thay i. C. xy ra chm hn. D. khng xy ra.

30. Mt hn hp kim loi gm Cu, Fe, Ag. Dung dch no sau y c th dng tch ly Ag m khng lm thay i khi lng ca kim loi trong hn hp ?

A. CuSO4

B. Fe2(SO4)3

C. AgNO3

D. HCl

31. lm sch thu ngn c ln tp cht l : Zn, Sn, Pb, ngi ta khuy loi thu ngn ny trong dung dch cht no sau y ?

A. AgNO3

B. Hg(NO3)2

C. HNO3

D. H2SO4 c, nng

32. Trong qu trnh in phn, catot xy ra :

A. qu trnh kh

B. qu trnh oxi ho

C. c qu trnh kh v qu trnh oxi hoD. qu trnh oxi ho kim loi

33. Phn ng ho hc no sau y xy ra trong qu trnh n mn kim loi ?

A. Phn ng th

B. Phn ng oxi ho - kh

C. Phn ng phn hu

D. Phn ng ho hp

34. bo v ni hi bng thp, ngi ta thng lt di y ni nhng tm kim loi hoc hp kim lm bng kim loi no sau y ?

A. Zn

B. Cu

C. Thp khng g

D. Pb

35. Trng hp no sau y l bo v n mn bng phng php in ho ?

A. Ph sn epoxi ln cc dy dn bng ng.

B. Ph thic ln b mt thanh st trong khng kh.

C. Ph mt lp du m ln chi tit my bng kim loi.

D. Gn cc thanh Zn ln chn cu bng thp ngm di nc.

36. Cun mt si dy thp vo mt thanh kim loi ri nhng vo dung dch H2SO4 long. Quan st thy bt kh thot ra rt mnh t si dy thp. Thanh kim loi c th l kim loi no trong s kim loi sau ?

A. Mg

B. Sn

C. Cu

D. Pt

37. Khi in phn dung dch NaCl vi in cc tr v mng ngn xp th dung dch thu c c :

A. pH = 7

B. pH > 7

C. pH < 7

D. pH = 5

38. Pht biu no sau y l ng ?

A. n mn in ho hc ph thuc vo nhit , nhit cng cao tc n mn cng nhanh.

B. n mn ho hc l qu trnh oxi ho kim loi pht sinh dng in.

C. n mn in ho hc l qu trnh oxi ho kim loi pht sinh dng in mt chiu.

D. Kim loi tinh khit s khng b n mn ho hc v n mn in ho hc.

39. Pht biu no sau y l ng v bn cht ca qu trnh n mn in ho hc ?

A. Kim loi c tnh kh yu ng vai tr in cc dng v b kh.

B. Kim loi c tnh kh mnh ng vai tr in cc dng v b oxi ho.

C. Kim loi c tnh kh yu ng vai tr in cc dng v b oxi ho.

D. Kim loi c tnh kh mnh ng vai tr in cc m v b oxi ho.

40. Qu trnh no sau y l n mn in ho hc ?

A. St chy trong kh clo.

B. Gang, thp lu ngy ngoi khng kh m.

C. Vt bng km ngm trong dung dch H2SO4 long.D. Thp tip xc vi hi nc nhit cao.

41. Hai si dy ni vi nhau t ngoi khng kh m. Mi ni gia hai si dy bng kim loi no sau y chng b t nht ?

A. Cu-Cu

B. Al-Cu C. Fe-Cu

D. Zn-Cu

42. C 1 si dy phi qun o c ni bi 3 on dy kim loi (theo th t) l nhm, ng v thp. Sau mt thi gian, ti cc ch ni thy c hin tng:

A. nhm v thp b t. B. nhm v ng b t. C. thp v ng b t. D. nhm, thp v ng b t.

43. iu no l ng trong cc iu sau ?

A. Khi in phn dung dch NaCl th pH ca dung dch gim dn.

B. Khi in phn dung dch cha hn hp CuSO4v NaCl th pH ca dung dch khng i.

C. Khi in phn dung dch cha hn hp CuSO4v Na2SO4 th pH ca dung dch gim dn.

D. Khi in phn dung dch AgNO3 th pH ca dung dch tng dn.

44. in phn dung dch AgNO3, sn phm in phn thu c catot l

A. O2

B. Ag

C. HNO3

D. H245. Khi in phn dung dch cha CuSO4 v NaCl, ti catot s thu c sn phm no sau y ?

A. Thu c Cu.

B. Ban u thu c H2, sau thu c Cu.

C. Ban u thu c Cu, sau thu c Na.D. Ban u thu c Cu, sau thu c H2.

46. in phn dung dch cha cc ion : Cu2+ ; Fe3+; H+ ; NO3-. Trn catot xy ra qu trnh kh ion theo th t no sau y ?

A. Cu2+, Fe3+, H+ B. Fe3+, Cu2+, H+

C. Fe3+, H+, Cu2+

D. Cu2+, H+, Fe3+47. Dy cht no sau y ch c th iu ch bng phng php in phn nng chy ?

A. Mg ; Zn ; Al B. Na ; Al ; Mg

C. Ca ; Fe ; K

D. Cu ; Ag ; Fe

48. in phn cht no sau y thu c kh H2 catot ngay khi in phn ?

A. Dung dch Pb(NO3)2

B. Dung dch AgNO3C. Dung dch CuSO4

D. Dung dch NaCl

49. in phn dung dch cha CuCl2 v AlCl3 n khi anot thy thot ra kh O2 th catot s thu c cc sn phm l

A. Cu ; Al

B. Cu ; H2

C. Al ; H2

D.Cu

50. iu ch cc kim loi c tnh kh mnh nh kim loi kim, kim th, nhm, phi dng phng php iu ch no sau y ?

A. Phng php thu luyn.

B. Phng php nhit luyn.

C. Phng php in phn dung dch. D. Phng php in phn nng chy.

51. Nguyn tc iu ch kim loi l

A. oxi ho kim loi.

B. kh cation kim loi.

C. oxi ho cation kim loi.

D. kh kim loi.

52. Cc kim loi no sau y c iu ch bng phng php in phn dung dch ca chng ?

A. Na ; Ca ; Cu

B. K ; Mg ; Al

C. Ca ; Ba ; Zn D. Ag ; Cu ; Pb

53. tch ly Ag t AgNO3 c th dng cch no sau y ?

A. Nung

B. in phn dung dch AgNO3 trong H2O

C. Dng mt thanh kim loi bng Cu cho vo dung dch AgNO3D. Cc cch trn u dng c.

54. Phng php nhit luyn dng rng ri trong cng nghip iu ch nhng kim loi no sau y ?

A. Kim loi mnh nh : Na, K, Ca,

B. Kim loi nh : Al, Zn, Sn,

C. Kim loi trung bnh nh : Fe, Cu,

D. C th iu ch mi kim loi.55. Mt hn hp X gm 3 kim loi Mg, Fe, Cu c t l mol l 1:1:1. Cho m gam hn hp X tc dng vi dung dch H2SO4 long d th c 33,6 lt kh H2 (ktc). m c gi tr l

A. 108 gam

B. 72 gam

C. 216 gam

D. 432 gam

56. Cho H2SO4 long d tc dng vi 6,659 gam hn hp hai kim loi A v B u c ho tr II c 0,1 mol cht kh, ng thi thy khi lng kim loi gim 6,5 gam. Ho tan cht rn cn li bng H2SO4 c, nng th c 0,16 gam kh SO2. A v B l

A. Mg v Cu

B. Fe v Cu

C. Zn v Cu

D. Zn v Pb

57. Cho mt kim loi X ho tr II vo 100 gam dung dch HCl 14,6% thu c 0,24 gam kh H2, dung dch sau phn ng tng so vi dung dch ban u l 2,64 gam. X l kim loi no sau y ?

A. Zn

B. Ni

C. Mg

D. Ca

58. Ngm mt inh st sch vo 200 ml dung dch CuSO4 1M. Sau mt thi gian ly inh st ra, ra nh, lm kh thy khi lng inh st tng 0,8 gam so vi ban u. Nng cc cht trong dung dch sau phn ng l

A. FeSO4 : 0,5M

B. Fe2(SO4)3 : 0,75M

C. CuSO4 : 0,5M ; Fe2(SO4)3 : 0,5M

D. FeSO4 : 0,5M ; CuSO4 : 0,5M

59. Ho tan 2,16 gam kim loi M trong HNO3 long thu c 604,8 ml hn hp kh E gm N2 v N2O c t khi so vi H2 l 18,45. M l

A. Fe

B. Al .

C. Zn

D. Mg

60. Mt lng kim loi ho tr II cho tc dng vi oxi. ho tan hon ton oxit thu c cn mt lng va dung dch H2SO4 15,4% thu c dung dch mui c nng 18,21 %. Kim loi l

A. Mg

B. Zn

C. Cu

D. Pb

61. Cho 2,275 gam kim loi X ho tr II tan vo dung dch hn hp cha hai axit HNO3 v H2SO4thu c 2,94 gam hn hp kh NO2 v D c th tch 1,344 lt (ktc). X l

A. Mg

B. Cu

C. Ca

D. Zn

62. Ho tan hon ton 0,01 mol hn hp hai kim loi u c ho tr II bng mt lng va dung dch cha hai axit HCl v H2SO4 c th tch 2000 ml thu c V lt kh H2 ktc. Gi tr pH ca dung dch axit v ca V l

A. 1 ; 22,4 lt

B. 0 ; 4,48 lt

C. 2 ; 0,224 lt D. 1 ; 4,48 lt63. Hai thanh kim loi M ho tr II c khi lng nh nhau. Thanh I nhng vo dung dch Cu(NO3)2. Thanh II nhng vo dung dch Pb(NO3)2. Sau mt thi gian khi lng thanh I gim 0,2% ; thanh II khi lng tng 28,4%. Bit s mol cc cht trong dung dch Cu(NO3)2 v Pb(NO3)2 u gim nh nhau. M l

A. Fe

B. Zn

C. Ni

D. Mg

KIM LOI NHM IA, IIA, IIIA

64. Ch ra nhn nh sai trong cc cu sau :

A. Cc nguyn t ca nguyn t nhm IIA c bn knh nguyn t tng khi s hiu nguyn t tng.

B. Cc kim loi kim c cng kiu mng tinh th.

C. Cc kim loi kim c cng, nhit nng chy cao hn kim loi k im th.

D. Cc kim loi nhm IA l nhng kim loi c tnh kh mnh nht.

65. Cho kim loi A vo dung dch CuCl2 thy kt ta v B vo dung dch CuCl2 thy kt ta mu xanh. A v B ln lt l

A. Na, Ca

B. Al, Fe

C. Ca, Fe

D. Fe, K

66. iu ch kim loi Na ngi ta dng phng php

A. in phn dung dch NaCl.

B. in phn NaCl nng chy.

C. in phn dung dch NaOH.

D. nhit phn Na2O.

67. Dung dch no sau y ho tan c hn hp gm : Al, Mg, K ?

A. H2O

B. HCl c

C. H2SO4 c ngui

D. NaOH

68. Hn hp no sau y tan hon ton trong nc ?

A. Hn hp Na, Al theo t l khi lng 23/27 B. Hn hp Na, Al theo t l khi lng 12,5/27

C. Hn hp Na, Al theo t l mol 2:3

D. Hn hp Na, Al theo t l mol 1: 2

69. nh gi mi trng no sau y l sai ?

A. Dung dch Al2(SO4)3c pH < 7

B. Dung dch Na2CO3c pH > 7

C. Dung dch Na[Al(OH)4] c pH > 7

D. Dung dch NaHCO3c pH < 7

70. bo qun kim loi kim, ngi ta ngm chng chm trong

A. nc B. du ho C. dung dch natri clorua D. dung dch axit clohiric

71. iu ch dung dch NaOH, ngi ta dng phng php in phn

A. NaCl nng chy.

B. dung dch NaCl khng c vch ngn xp gia hai cc.

C. dung dch NaCl c vch ngn xp gia hai cc.D. dung dch NaNO3.

72. Mt trong s cc bin php lm chuyn dch cn bng ca phn ng CaCO3CaO + CO2 sang phi l

A. tng nhit ca phn ngB. gim nhit ca phn ng

C. tng nng ca kh CO2

D. tng thm lng vi

73. nhn bit 5 cht bt mu trng : Na2CO3, NaCl, Na2SO4, BaCO3, BaSO4 ch cn dng ho cht no sau y ?

A. H2SO4 v qu tm

B. H2O v CO2C. dung dch Ba(OH)2 D. dung dch HCl

74. nhn bit ba dung dch NaCl, MgCl2, AlCl3ch cn dng

A. dung dch NaOH.

B. dung dch Na2CO3. C. Dung dch Na2SO4. D. dung dch AgNO3.

75. Phn ng no sau y dng gii thch pH ca dung dch Na2CO3> 7 ?

A. Na2CO3+ 2HCl 2NaCl + CO2 + H2O

B. Na2CO3+ Ba(OH)2 BaCO3+ 2NaCl

C. Na2CO3+ CaCl2 CaCO3+ 2NaCl

D. Na2CO3 + H2O NaHCO3 + NaOH

76. NaHCO3 l mt trong nhng thnh phn ca thuc cha bnh au d dy do tham gia phn ng ho hc no sau y trong d dy ?

A. HCO3 + H+ CO2 + H2O

B. HCO3 + OH- CO32- + H2O

C. NaHCO3 + H2O Na2CO3 + NaOH

D. NaHCO3 + H2O H2CO3 + NaOH

77. Phn ng no sau y dng gii thch s to thnh thch nh trong hang ng ?

A. Ca(HCO3)2 CaCO3 + CO2 + H2O

B. CaCO3 + CO2 + H2O Ca(HCO3)2C. CaCO3+ 2HCl CaCl2 + CO2 + H2O

D. CaCO3 CaO + CO278. Cho a mol CO2vo 1 dung dch cha b mol NaOH thu c 2 mui NaHCO3, Na2CO3. Ta c :

79. Cho cc cht : 1. NaCl ; 2. Ca(OH)2; 3. Na2CO3; 4. HCl. Nhng cc cht c th lm mm nc cng tm thi l

A. 1, 2, 3.

B. 2, 3.

C. 1, 3.

D. 1, 3, 4.

80. Nc chy mn l hin tng t nhin c gii thch bng phn ng ho hc no sau y ?

A. CaCO3+ 2HCl CaCl2 + H2O + CO2

B. CaCO3 + H2O + CO2 Ca(HCO3)2C. Ca(OH)2 + CO2 CaCO3 + H2O

D. Ca(HCO3)2 CaCO3 + CO2 + H2O

81. Mt dung dch cha a mol NaHCO3v b mol Na2CO3. Thm (a + b) mol Ca(OH)2 vo dung dch trn th khi lng kt ta thu c l

A. 100.a (g)

B. 100.b (g)

C. 100(a + b) (g) D. 200(a + b) (g)

82. Cp cht no sau y c th tn ti ng thi trong dung dch ?

A. AlCl3v NaOH B. MgCl2 v Ba(OH)2

C. Al(NO3)3 v (NH4)2SO4 D. AlCl3 v NaAlO283. Nhng ion no sau y tn ti ng thi trong cng mt dung dch ?

A. Na+; Ba2+; Ca2+ ; HCO3-

B. Na+; Mg2+; CO32-; HCO3-C. Na+; Al3+; CO32-; NO3-

D. Na+; H+; SO42-; [Al(OH)4]-84. Hin tng no xy ra khi trn dung dch Na2S (d) vi dung dch Al2(SO4)3?

A. C kt ta keo trng v kh c mi trng thi

B. C kt ta en (Al2S3)

C. Khng thy thay i g

D. C kh mi trng thi thot ra, kt ta xut hin sau tan ht

85. Cht no sau y s kt ta hon ton Al(OH)3 t dung dch Na[Al(OH)4]?

A. HCl d

B. NaOH d

C. CO2

D. NH386. Nhn nh no sau y sai ?

A. Al2O3l mt oxit lng tnh

B. Dung dch phn chua (NaAl(SO4)2.12H2O) c pH Y > Z

B. Y > Z > X

C. Y > X > Z

D. Z > Y > X

88. Phn ng ho hc xy ra khi cho nhm vo dung dch cha hn hp H2SO4 long v HCl c bn cht l

A. 2Al + 6HCl 2AlCl3 + 3H2

B. 2Al + 6H+ 2Al3+ + 3H2C. 2Al + 12H+ + 3SO42- Al3+ + 6H2O + 3SO2

D. 2Al + H2SO4 Al2(SO4)3 + 3H2

89. iu ch nhm ngi ta

A. dng nhng cht kh nh C, CO, H2 kh Al2O3.B. nhit phn Al2O3.

C. in phn Al2O3 nng chy.

D. in phn AlCl3 nng chy.

90. Ch ra cu sai trong cc cu sau.

Trong qu trnh sn xut nhm trong cng nghip ngi ta thng cho Al2O3 vo criolit nng chy. Cho criolit vo l :

A. to ra hn hp c nhit nng chy thp hn Al2O3B. to hn hp cht in li c t khi nh hn Al nng chy

C. to cht lng c tnh dn in tt hn Al2O3 nng chy

D. kh ion nhm trong Al2O3 to thnh Al nng chy

91. Mt dung dch cha a mol NaOH tc dng vi mt dung dch c cha b mol AlCl3. iu kin thu c kt ta cc i l

A. a > 4b

B. a < 4b

C. a = b

D. a = 3b

92. Mt dung dch cha a mol Na[Al(OH)4] tc dng vi mt dung dch c cha b mol HCl. iu kin thu c kt ta ln nht l

A. a > 4b

B. a < 4b

C. A = b

D. b < 5 a

93. Mt loi vi cha CaCO3 v 20% tp cht tr. Nung 1 tn vi 900oC. Gi thit ch c CaCO3 b phn hu theo phng trnh: CaCO3 rn CaO rn + CO2 kh

Hiu sut ca phn ng l 60%. Khi lng cht rn thu c sau phn ng l

A. 268,8 kg

B. 336,0 kg

C. 68,8 kg

D. 536,0 kg

94. Ho tan ht 68,5 g kim loi M vo H2O, sau phn ng thu c 11,2 lt H2 ( ktc). M l kim loi no cho di y ?

A. Natri

B. Kali

C. Canxi

D. Bari

95. in phn nng chy mui clorua ca mt kim loi kim, thu c 896 ml kh (ktc) anot v 3,12 gam kim loi catot. Mui em in phn l

A. LiCl

B. NaCl

C. KCl

D. RbCl

96. Cho 21,6 gam bt nhm kim loi tan ht trong dung dch HNO3 long thu c NO (sn phm kh duy nht). Th tch NO thu c ktc l

A. 6,72 lt

B. 13,44 lt

C. 17,92 lt

D. 2.24 lt

97. Cho t t 200 ml dung dch HCl 1,5M vo 200 ml dung dch Na2CO31,0M. Sau phn ng thu c V lt CO2 ktc. Gi tr ca V l

A. 2,24 lt

B. 3,36 lt

C. 4,48 lt

D. 1,12 lt

98. Khi cho 3,36 lt kh CO2( ktc) tc dng vi mt dung dch cha 8 gam NaOH th sn phm thu c l

A. Na2CO3 v NaOH d

B. Na2CO3C. Na2CO3 v NaHCO3

D. NaHCO3 v CO2 d

99. Ho tan hon ton 13,92 gam hn hp 2 kim loi kim thuc hai chu k lin tip vo nc thu c 5,9136 lt H2 27,30C v 1 atm. Hai kim loi l

A. Li, Na

B. Na, K

C. K, Rb

D. Rb, Cs

100. in phn hon ton 14,9 gam mui clorua nng chy ca mt kim loi kim thu c 2,24 lt kh anot (ktc). Kim loi l

A. Na

B. K

C. Rb

D. Li 101. Cho mt mu Na vo dung dch HCl c, kt thc th nghim thu c 4,48 lt kh (ktc). Khi lng Na dng l

A. 4,6 gam

B. 0,46 gam

C. 0,92 gam

D. 9,2 gam

102. Cho mt mu K vo 400 ml dung dch HCl c nng 1M, kt thc th nghim thu c 6,72 lt kh (ktc).

a) Khi lng K dng l

A. 23,4 gam

B. 15,6 gam

C. 31,2 gam

D. 3,9 gam

b) C cn dung dch thu c cht rn c khi lng l

A. 104,4 gam B. 52,2 gam

C. 41 gam

D. 34,8 gam

103. Cho mt dung dch cha 12 gam NaOH hp th hon ton 4,48 lt kh SO2(ktc), khi lng mui khan thu c l

A. 20,8 gam

B. 23,0 gam

C. 31,2 gam

D. 18,9 gam

104. in phn 1 lt dung dch NaCl vi in cc tr, mng ngn xp ti khi dung dch c pH =12 (lng Cl2 ho tan trong dung dch khng ng k). Bit rng vn cn lng NaCl d v th tch dung dch thay i khng ng k. Th tch kh thot ra anot (ktc) l

A. 1,12 lt

B. 0,224 lt

C. 0,112 lt

D. 0,336 lt

105. Nung 100 gam hn hp X gm Na2CO3v NaHCO3cho n khi lng khng i thu c 69 gam cht rn. % khi lng Na2CO3 l

A. 16%

B. 84%

C. 31%

D. 69%

106. Nhit phn hon ton m gam hn hp X gm Na2CO3 v CaCO3 thu c 11,6 gam cht rn v 2,24 lt kh (ktc). % khi lng CaCO3l

A. 6,25%

B. 8,62%

C. 50,2%

D. 62,5%

107. Chia m gam hn hp gm mt mui clorua kim loi kim v BaCl2 thnh hai phn bng nhau.

Phn I em ho tan hon ton vo nc ri cho tc dng vi dung dch AgNO3 d thy c 8,61 gam kt ta. Phn II em in phn nng chy thu c V lt kh anot (ktc). V c gi tr l

A. 6,72 lt

B. 0,672 lt

C. 1,344 lt

D. 13,44 lt

108. Ho tan hon ton 5,94 gam hn hp hai mui clorua ca hai kim loi A, B u thuc nhm IIA vo nc c 100ml dung dch X. lm kt ta ht anion Cl

trong X, ngi ta cho X tc dng vi mt lng va dung dch AgNO3. Kt thc th nghim c 17,22 kt ta v dung dch Y. Lc ht kt ta, c cn dung dch Y thu c mui c khi lng l

A. 4,68 gam B. 7,02 gam

C. 9,12 gam D. 2,76 gam

109. Cho V lt kh CO2(ktc) hp th hon ton vo 100 ml dung dchCa(OH)2 0,7M . Kt thc th nghim thu c 4 gam kt ta. Gi tr ca V l

A. 1,568 lt

B. 1,568 lt hoc 0,896 lt C. 0,896 lt

D. 8,896 lt hoc 2,24 lt

110. Dung dch A gm cc ion Ca2+, Ba2+, Mg2+, 0,1 mol Cl-, 0,2 mol NO3-. Thm t t dung dch K2CO3 1M vo dung dch A n khi c lng kt ta ln nht th th tch dung dch K2CO3cho vo l

A. 150 ml

B. 300 ml

C. 200 ml

D. 250 ml

111. Trn 8,1 gam Al vi 48 gam bt Fe2O3 ri cho tin hnh phn ng nhit nhm trong iu kin khng c khng kh. Kt thc th nghim lng cht rn thu c l

A. 61,5 gam

B. 56,1 gam

C. 65,1 gam

D. 51,6 gam

112. Trn 5,4 gam Al vi 17,4 gam Fe3O4 ri tin hnh phn ng nhit nhm. Gi s ch xy ra phn ng kh hon ton Fe3O4 thnh Fe. Ho tan hon ton hn hp rn sau phn ng bng dung dch H2SO4 long th c 5,376 lt H2 ktc. Hiu sut ca phn ng nhit nhm l

A. 12,5 %

B. 60%

C. 20%

D. 80%

113. Trn 0,81 gam Al vi bt Fe2O3 v CuO ri t nng tin hnh phn ng nhit nhm mt thi gian thu dc hn hp A. Ho tan hon ton A trong HNO3 un nng th c V lt kh NO duy nht ktc. V c gi tr l

A. 0,224 lt

B. 0,672 lt

C. 2,24 lt

D. 6,72 lt.

KIM LOI NHM B

114. S oxi ho ph bin ca kim loi Cr l

A. +1 ; +2

B. +2 ; +3

C. +1 ; +2 ; +3 ; +4 ; +5 ; +6

D. +2 ;+3 ;+6

115. Cu hnh electron ca 24Cr2+l

A. 1s22s22p63s23p63d24s2

B. 1s22s22p63s23p63d34s1C. 1s22s22p63s23p64s1

D. 1s22s22p63s23p63d4116. Cu hnh electron ca Fe3+l

A. 1s22s22p63s23p63d64s2

B. 1s22s22p63s23p63d6C. 1s22s22p63s23p63d5

D. 1s22s22p63s23p63d34s2117. Nguyn t hay ion no sau y c cu hnh electron l 1s22s22p63s23p63d10?

A. Ag+

B. Zn2+

C. Fe2+

D. Cu2+118. Nhng n cht kim loi trong dy cht no sau y u khng b n mn trong khng kh do c

lp oxit bo v ?

A. Al, Fe, Cu

B. Ni, Cr, Sn

C. Au, Al, Zn D. Au, Ag, Cu

119. Qung c gi tr sn xut gang l

A. manhetit v hematit B. manhetit v pirit C. pirit v xierit D. hematit v xierit

120. Trong phng th nghim, bo qun dung dch mui st(II) ngi ta thng ngm vo dung dch

A. mt ci inh st

B. mt l nhm

C. mt t bc D. mt vin km

121. Sc kh NH3 d vo dung dch FeCl3 s thy hin tng l

A. c kt ta nu

B. c kt ta trng xanh

C. dung dch trong sut, khng mu D. dung dch trong sut, mu vng nu

122. Cho mt mu kim loi Na vo dung dch FeCl3, khi kt thc phn ng s quan st thy hin tng

A. c kt ta nu

B. dung dch trong sut, khng mu

C. c kim loi Fe sinh ra

D. c kt ta trng

123. Cho kim loi st ln lt vo cc dung dch no sau y lun lun thu c mui st(II) ?

A. AgNO3, HCl

B. H2SO4 c nng, HNO3c nng

C. HCl, CuCl2

D. FeCl3, H2SO4 c ngui

124. Kim loi no sau y tan c vo dung dch mui FeCl3(khng to kt ta)?

A. Sn

B. Ag

C. Na

D. Mg

125. Cho cc phn ng sau :3Fe2O3+ CO 2Fe3O4 + CO2(1) FeO + CO Fe + CO2(2), Fe3O4+ CO 3FeO + CO2(3)

Cc phn ng kh ion st trong oxit st c thc hin trong qu trnh sn xut gang xy ra theo th t sau :

A. 1, 2, 3

B. 3, 1, 2 C. 1, 3, 2 D. 2, 1, 3

126. Trong qu trnh luyn gang thnh thp, phn ng no sau y l phn ng to x ?

A. Si + O2 SiO2

B. S + O2 SO2C. CaO + SiO2 CaSiO3

D. FeO + Mn Fe + MnO

127. Cho bt st (d) vo dung dch H2SO4 c nng, khi kt thc phn ng trong dung dch c cha :

A. FeSO4B. Fe2(SO4)3

C. Hn hp FeSO4v Fe2(SO4)3D. Hn hp H2SO4v Fe2(SO4)3128. Cho : .

Sut in ng chun ca pin in ho Cr- Sn l

A. 0,60V

B. +0,88V

C. +0,60V

D. 0,88V

129. Cho .

Phn ng ho hc xy ra trong pin in ho Ag - Fe l

A. Fe2+ + 2Ag Fe + 2Ag+

B. Fe + 2Ag+ Fe2+ + 2Ag

C. Fe2+ + Ag+ Fe3+ + Ag

D. Fe3+ + Ag Fe2+ + Ag+130. Cho mt t bt st tc dng vi dung dch AgNO3 d. Dung dch sau phn ng cha nhng cht no sau y ?

A. Fe(NO3)2 v AgNO3

B. Fe(NO3)3 v AgNO3C. Fe(NO3)2 v Fe(NO3)3

D. Fe(NO3)2, Fe(NO3)3 v AgNO3131. Ho cht no sau y c th dng tch ly Ag m khng lm thay i khi lng Ag trong hn hp gm Ag v Cu ?

A. HCl B. AgNO3C. Fe(NO3)3

D. FeCl2132. Cho t t dung dch NH3 n d vo dung dch cha CuSO4, thy c hin tng no sau y?

X. C kt ta trng sau kt ta tan to dung dch trong sut khng mu

Y. C kt ta mu trng sau kt ta tan to dung dch xanh thm

Z. C kt ta mu xanh sau kt ta tan to dung dch xanh thm

A. C kt ta mu xanh khng tan trong NH3 d

133. Dy cht no ca nguyn t ng c mu sc bin i ln lt theo th t trng, gch, , xanh, en ?

A. CuSO4khan ; Cu2O ; Cu ; Cu(OH)2 ; CuO

B. CuSO4 .5H2O ; Cu2O ; Cu ; Cu(OH)2 ; CuO

C. CuSO4khan ; CuO ; Cu ; Cu(OH)2 ; Cu2O

D. Cu(OH)2 ; Cu ; Cu2O ; Cu2+.6H2O ; CuO

134. Ngi ta m ng cho mt vt bng thp bng cch ni vt cn m vi mt cc ca ngun in, in cc cn li l mt thanh ng kim loi v ngm trong dung dch cht in phn. in cc ni vi vt v dung dch cht in phn l nhng cht no sau y ?

A. Cc m ; dung dch CuSO4

B. Cc dng ; dung dch CuSO4C. Cc dng ; dung dch FeSO4

D. Cc dng ; dung dch FeSO4135. Nung mt hn hp gm AgNO3 v Cu(NO3)2 n khi lng khng i. Cht rn thu c l hn hp cc cht no sau y ?

A. Ag, Cu

B. Ag, CuO

C. Ag2O, Cu2O D. Ag, Cu2O

136. Cho cc cht: Cu, CuO, Cu2O, CuS, Cu2S, Cu(OH)2, CuCO3, CuSO3 ln lt vo dung dch HNO3 c, nng. S phn ng oxi ho - kh xy ra l

A. 1

B. 4

C. 5

D. 8

137. Cho 1 mol hn hp gm Zn v Cu vo dung dch HNO3 c nng, s mol HNO3 phn ng v s mol cht kh thot ra ktc l

A. 4 ; 2

B. 8 ; 2

C. 3 ; 1

D. 8 ; 4

138. Hn hp bt A c 3 kim loi Fe, Ag, Cu. Ngm hn hp A trong dung dch B ch cha mt cht. Khuy k phn ng xy ra hon ton, thy cn li Ag. Dung dch B c th l

A. axit

B. kim

C. mui

D. nc

139. phn bit dung dch cha ZnCl2 vi cc dung dch mui FeCl2, MgCl2, c th dng cc dung dch cha ho cht no sau y ?

A. Na2CO3

B. Cl2

C. HCl

D. NH3140. Hp cht no sau y va th hin tnh kh, va th hin tnh oxi ho ?

A. Fe2O3

B. FeCl3

C. FeSO4

D. Fe(NO3)3141. Hp kim ca nhm v ng c cu to bng tinh th hp cht ho hc trong nhm chim 12,3%. Cng thc ho hc ca hp cht l

A. Cu2Al

B. Cu3Al

C. CuAl2

D. CuAl3142. Dng 0,65 g Zn y Au ra khi ion phc xianua (bit Zn = 65, Au = 197). Khi lng Au sinh ra l

A. 1,97 g

B. 5,91 g

C. 7,88 g

D. 3,94 g

143. Cho hn hp gm Cu, Fe ho tan vo dung dch HCl d thu c 12,8 gam cht rn v 12,7 gam mui. Thnh phn khi lng ca Cu l

A. 69,57%

B. 30,43%

C. 30,34%

D. 69,66%

144. Mt loi hp kim Cu-Sn c t l mol Sn : Cu = 1 : 5. Hm lng Sn trong hp kim l

A. 27,10%

B. 16,76%

C. 16,67%

D. 27,11%

145. Khi lng bt nhm cn dng iu ch 78 gam Cr t Cr2O3 bng phng php nhit nhm (Cr = 52 ; Al = 27) l

A. 45 gam

B. 81 gam

C. 40,5 gam

D. 20,25 gam

146. Nung x gam mui Cu(NO3)2 khan, n khi lng khng i thu c 7,00 gam cht rn. x nhn gi tr no sau y ?

A. 16,45 gam B. 16,56 gam C. 16,54 gam D. 16,65 gam

147. Ho tan hn hp gm Zn, ZnO, Zn(OH)2 vo dung dch NaOH d thu c 3,36 lt kh H2 ktc. Nu cho hn hp ny vo dung dch H2SO4 long d th th tch kh thu c l

A. 2,24 lt B. 3,36 lt C. 4,48 lt D. 1,12 lt

148. Cho 6,5 gam Zn vo dung dch cha m gam hn hp NaNO3 v NaOH, thu c mt hn hp gm kh NH3 v H2 c th tch 0,896 lt ktc. m c gi tr l

A. 1,7 gam

B. 7,2 gam

C. 3,4 gam

D. 8,9 gam

149. ho tan mt hn hp gm Fe, Ag, Cu, Zn cn dng dung dch cha y gam HNO3, bit rng sau phn ng thu c 6,72 lt kh NO2 ktc. Vy y c gi tr l

A. 37,8 gam

B. 18,9 gam

C. 9,45 gam

D. 37,8 gam

150. in phn 2 lt dung dch CuSO4 nng 1M, sau mt thi gian thu c 5,6 lt kh thot ra anot, dung dch A v ng kim loi thot ra bm trn in cc catot. Gi s Cu2+ khng thu phn trong mi trng axit, th tch dung dch thay i khng ng k. Tr s pH ca dung dch A v khi lng Cu thot ra l

A. 0,1 ; 3,2 gam B. 0,3 ; 16 gam C. 0,3 ; 32 gam

D. 0,6 ; 3,2 gam

151. Cht no c hm lng Fe cao nht trong s cc cht sau ?

A. FeS

B. FeSO4

C. Fe2O3

D. Fe3O4152. Qung giu st nht trong t nhin l

A. manhetit

B. xierit

C. hematit

D. hematit nu

153. Kh hon ton m gam Fe2O3 bng CO d, sc ton b lng kh thu c vo dung dch Ca(OH)2d, lc tch kt ta, lm kh, cn nng 3,0 gam. Gi tr ca m l

A. 1,6 gam

B. 0,8 gam

C. 3,6 gam

D. 4,8 gam

154. Cho hn hp gm Fe v Mg c t l mol l 1:2 vo dd CuSO4 d thu c 9,6 gam ng. Khi lng hn hp u l

A. 5,2 gam

B. 3,6 gam

C. 8,4 gam

D. 8 gam

155. Cho 5,6 gam Fe phn ng hon ton vi HNO3, thu c sn phm kh duy nht l NO2. Th tch dung dch HNO3 1M dng va trong phn ng trn l

A. 0,3 lt

B. 0,6 lt

C. 3 lt

D. 1,5 lt

156. Cho 2,52 gam mt kim loi tc dng vi dung dch H2SO4 long d to ra 6,24 gam mui sunfat. Kim loi l

A. Mg

B. Zn

C. Al

D. Fe

157. t chy hon tong m gam Fe trong khng kh thu c 23,2 gam st t oxit. m c gi tr l

A. 5,6 gam B. 18 gam

C. 16,8 gam

D. 10 gam

158. Thc hin phn ng nhit nhm kh hon ton m gam hn hp oxit st cn 2,7 gam bt nhm. Cho hn hp thu c sau phn ng vo dung dch HCl d, thy thot ra 2,52 lt kh (ktc). Cng thc oxit st v gi tr ca m l

A. Fe3O4 ; 8,7 gam B. Fe3O4 ; 17,4 gam C. Fe2O3 ; 8,7 gam

D. FeO ; 7,2 gam

159. Cho 14,4 gam FeO phn ng ht vi dung dch HNO3 thu c hn hp kh NO v NO2 vi t l th tch l 1 : 2. Tng th tch NO v NO2 ktc l

A. 1,92 lt

B. 22,4 lt C. 3,36 lt

D. 1,68 lt

160. Nhng mt thanh st vo dung dch CuSO4, sau khi phn ng xy ra hon ton, mang ra ra nh, lm kh, cn, thy khi lng thanh st tng ln 1,6 gam. Ton b lng ng sinh ra u bm ht ln b mt thanh st. Khi lng ng kim loi bm vo thanh st l

A. 12,8 gam

B. 1,28 gam C. 2,56 gam D. 1,6 gam

161. Trn 24 gam Fe2O3 vi 10,8 gam nhm ri nung nhit cao cho phn ng hon ton, hn hp thu c sau phn ng em ho tan vo dung dch NaOH d, thy c 5,376 lt kh (ktc) thot ra. Hiu sut phn ng l

A. 12,5%

B. 60%

C. 80%

D. 90%

162. Dng qung manhetit cha 80% Fe3O4 sn xut 800 tn gang c hm lng st l 95%. Hiu sut c qu trnh sn xut l 80%. S tn qung cn dng l

A. 1639,88 tn B. 3935 tn C. 1070,8 tn D. 4919,6 tn

Bin son: Nguyn Xun Phong

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