Cu 1. Ha tan hon ton 16,2 gam mt kim loi ha tr cha r bng dung
dch HNO 3 c 5,6 lt (ktc) hn
hp A nng 7,2 gam gm NO v N2. Kim loi cho l : A. Cr B. Fe C. Al
D. Mg Cu 2. Ha tan 1,68 gam kim loi M trong HNO3 long, d th thu c
0,02 mol NO ; 0,01 mol N2O. Kim loi M l A. Al B. Fe C. Mg D. Zn Cu
3. Cho a gam oxit st t vo dung dch HNO3 d thu c hn hp sn phm kh gm
0,02 mol NO v 0,01 mol N2O. a l : A. 27,45 gam B. 32,48 gam C. 35,7
gam D. 36,3 gam Cu 4. Nhng kim loi no sau y khng tc dng vi HNO3 c
ngui nhng tc dng vi dung dch axt HCl : A. Cu , Zn B. Al , Fe C. Al
, Zn D. Fe , Zn Cu 5. Ho tan hon ton m gam Cu trong dung dch HNO3
thu c 1,12 lt hn hp kh NO v NO2 (ktc) c t khi hi i vi H2 l 16,6. Gi
tr ca m l A. 8,32. B. 3,90. C. 4,16. D. 6,40. Cu 6. Ha tan hon ton
12,8 gam Cu trong dung dch HNO 3 thu c V lt hn hp kh X ( ktc ) gm
NO 2 v NO . Bit t khi ca X so vi H2 l 19 . Vy V lt bng : A. 4,48lt
B. 2,24lt C. 3,36lt D. 6,72lt Cu 7. Ho tan 8,32g Cu vo 3 lt dung
dch HNO 3 (va ) c 4,928 lt hn hp NO, NO 2 (ktc). Tnh khi lng 1 lt
hn hp NO, NO2 ktc v CM dung dch HNO3 A. 1,99g; 0,16M B. 1,74g;
0,18M C. 2,14,; 0,15M D. 2,12g; 0,14M Cu 8. Cho m gam Cu tc dng ht
vi dung dch HNO3 thu c 8,96 lt hn hp NO v NO2 c khi lng 15,2 gam.
Gi tr ca m l A. 25,6 g. B. 16,0 g. C. 19,2 g. D. 12,8 g. Cu 9. Cho
m (g) Cu tc dng ht vi dd HNO3 thu c 1,12 lt ( ktc) hh kh NO v NO2 c
t khi so vi H2 l 16,6. Gi tr ca m l: A. 3,9g B. 4,16g C. 2,38g D.
2. 08g Cu 10. Ho tan hon ton 45,9g kim loi R bng dung dch HNO3long
thu c hn hp kh gm 0,3 mol N2O v 0,9mol NO. Hi R l kim loi no: A. Na
B. Zn C. Mg D. Al Cu 11. Ho tan hon ton 24,3g Al vo dung dch HNO3
long d thu c V lt hn hp kh (ktc) gm NO v N2O c t khi hi so vi H2 l
20,25. Gi tr ca V l A. 6,72. B. 2,24. C. 8,96. D. 11,20. Cu 12. Ho
tan hon ton 5,94g kim loi R trong dung dch HNO3 long thu c 2,688lt
(ktc) hn hp kh gm NO v N2O c t khi so vi H2 l 18,5. Kim loi R l: A.
Fe. B. Cu. C. Mg. D. Al. Cu 13. Cho a gam Al phn ng ht vi axt HNO3
thu c 8,96lt ( ktc ) hn hp kh NO v N2O c t khi hi so vi hydro bng
16,75. Vy khi lng a gam l : A. 17,5 B. 13,5 C. 15,3 D. C kt qu khc
Cu 14. Ha tan ht 10,8 gam Al trong dung dch axt HNO 3 thu c hn hp A
gm NO v NO 2 c t khi hi so vi H2 l 19. Th tch mi kh trong hn hp A (
ktc ) l : A. Cng 5,72lt B. Cng 6,72 lt C. 3,36lt v 6,72lt D. 7 lt v
4 lt Cu 15. Ho tan hon ton m gam Al vo dung dch HNO3 rt long thu c
hn hp gm 0,015 mol N2O v 0,01 mol NO (khng c sn phm NH4NO3). Gi tr
ca m l: A. 1,35 g. B. 0,81 g. C. 1,92 g. D. 1,08 g. Cu 16. Cho m
gam Al tan hon ton trong dd HNO3 thy to ra 44,8 lit hn hp 3 kh NO,
N2O, N2 c t l mol ln lt l 1:2:2. Gi tr m l? A. 75,6 g B. Kt qu khc
C. 140,4 g D. 155,8 g Cu 17. Ho tan hon ton 12,42 gam Al bng dung
dch HNO 3 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 H 2 l 18. C cn
dung dch X, thu c m gam cht rn khan. Gi tr ca m l A. 38,34. B.
34,08. C. 106,38. D. 97,98. Cu 18. Chia hn hp gm 2 kim loi X, Y c
ho tr khng i thnh 2 phn bng nhau: + Phn 1: Ho tan hon ton trong
dung dch hn hp gm HCl v H2SO4 thu c 3,36 lt H2( ktc). + Phn 2: Ho
tan hon ton trong dung dch HNO3 thu c V lt NO duy nht ( ktc). Gi tr
ca V l A. 2,24 lt. B. 3,36 lt. C. 4,48 lt. D. 5,60 lt. Cu 19. Hn hp
X gm Al, Cu c khi lng 59g. Ho tan X trong 3 lt dung dch HNO 3 c hn
hp Y gm NO, N2 (mi kim loi ch to 1 kh) v li mt cht rn khng tan. Bit
hn hp Y c d/k 2 = 1 v V = 13,44 lt (ktc). Tnh khi lng ca Al, Cu
trong hn hp u v CM ca dung dch HNO3.
A. 27g Al; 32g Cu; 1,6M B. 35g Al; 24g Cu; 1,2M C. 27g Al; 32g
Cu; 1,4M D. 33,5g Al; 25,5g Cu; 1,6M Cu 20. Chia hn hp 2 kim loi c
ho tr khng i lm 2 phn bng nhau. Phn 1 tan ht trong dung dch HCl to
ra 1,792 lt H2 (ktc). Phn 2,nung trong oxi thu c 2,84 gam hn hp
oxit. Khi lng hn hp 2 kim loi ban u l: A. 2,2 gam B. 3,12 gam C.
2,4 gam D. 1,56 gam Cu 21. Ha tan 1 hn hp X gm 2 kim loi A, B trong
axit HNO3 long. Kt thc phn ng thu c hn hp kh Y c 0,1 mol NO ; 0,15
mol NO2 v 0,05 mol N2O. Bit rng khng c phn ng to mui NH4NO3. S mol
HNO3 phn ng: A. 0,75 mol B. 0,9 mol C. 1,2 mol D. 1,05 mol Cu 22.
Cho 12,9 gam hn hp Al v Mg tc dng hon ton vi dung dch hn hp gm
H2SO4 v HNO3 thu c 0,1 mol mi kh SO2; NO; N2O. Khi lng Al c trong
hn hp l A. 8,10 g. B. 5,40 g. C. 4,05 g. D. 6,75 g. Dng choCu
23,24,25: Hn hp X gm FeS2 v MS c s mol nh nhau (M l kim loi c ho tr
khng i). Cho 6,51g X tc dng hon ton vi dung dch HNO 3 d, un nng thu
c dung dch A v 13,216 lt hn hp kh B (ktc) c khi lng l 26,34 gam gm
NO 2 v NO. Cho A tc dng vi dung dch BaCl 2 d thu c m gam kt ta. Cu
23. Kim loi M l: A. Mg. B. Zn. C. Ni. D. Ca Cu 24. Gi tr ca m l: A.
20,97. B. 13,98. C. 15,28. D. 28,52. Cu 25. Phn trm khi lng ca FeS2
trong X l: A. 44,7%. B. 33,6%. C. 55,3%. D. 66,4%. Dng cho Cu
26,27,28: Cho a gam hn hp A gm Mg, Al vo b gam dung dch HNO3 24%
thu c 8,96 lt hn hp kh X gm NO, N2O, N2(ktc) v dung dch B. Thm mt
lng O2va vo X, sau phn ng c hn hp Y. DnY t t qua dung dch NaOH d
thu c 4,48 lt hn hp kh Z (ktc) c t khi hi so vi H2 l 20. Nu cho
dung dch NH3 d vo B th thu c c 62,2 gam kt ta. u 26. Phn trm th tch
ca NO trong X l: A. 50%. B. 40%. C. 30%. D. 20%. u 27. Gi tr ca a
l: A. 23,1. B. 21,3. C. 32,1. D. 31,2. u 28. Gi tr ca b l: A.
761,25. B. 341,25. C. 525,52. D. 828,82. Cu 29. Ha tan hon ton
3,416 gam hn hp Ag, Cu trong dung dch HNO3 thu c mui nitrat v
0,7168 lt hn hp NO v NO2 (ktc), t khi hi ca B i vi H2 bng 19. Tnh
khi lng mi kim lai trong hn hp: A. 1,449g Ag v 1,967g Cu B. 1,944g
Ag v 1,472g Cu C. 1,08g Ag v 2,336g Cu D. 2,16g Ag v 1,256g Cu Cu
30. Ho tan hon ton 8,5 gam hn hp Zn, Mg bng dung dch H2SO4 c thu c
1,12 lt SO2 ( ktc) v 1,6 gam S v dung dch X. Khi lng mui khan trong
dung dch X l A. 18,1 g. B. 24,8 g. C. 28,1 g. D. 30,4 g. Cu 31. em
nung hn hp A, gm hai kim loi: x mol Fe v 0,15 mol Cu, trong khng kh
mt thi gian, thu c 63,2 gam hn hp B, gm hai kim loi trn v hn hp cc
oxit ca chng. em ha tan ht lng hn hp B trn bng dung dch H2SO4 m c,
th thu c 0,3 mol SO2. Tr s ca x l: A. 0,7 mol B. 0,5 mol C. 0,6 mol
D. 0,4 mol Cu 32. (A-07) Ho tan hon ton 12 gam hn hp Fe, Cu (t l
mol 1: 1) bng HNO3,thu c V lt (ktc) hn hp kh X (gm NO v NO2) v dung
dch Y (ch cha 2 mui v axit d). T khi ca X so vi H 2 bng 19. Gi tr
ca V l A. 3,36. B. 2,24. C. 5,60. D. 4,48. Cu 33. Cho 1,35 gam hn
hp X gm Cu, Al, Mg tc dng ht vi dung dch HNO 3,thu c 1,12 lt hn hp
kh gm NO v NO2 c t khi so vi H2 bng 21,4. Khi lng mui to thnh trong
dung dch l : A. 5,69 gam B. 5,45 gam C. 4,54 gam D. 5,05 gam Cu 34.
Cho hn hp gm FeO, CuO, Fe3O4 c s mol ba cht u bng nhau tc dng ht vi
dung dch HNO 3 thu c hn hp kh gm 0,09mol NO2 v 0,05mol NO. S mol ca
mi cht l: A. 0,12 mol B. 0,24 mol C. 0,21 mol D. 0,36 mol Cu 35.
Cho 1,35 g hh gm Mg, Al, Cu tc dng vi dd HNO3 long thu c 1,12 lt
(kc) hh kh X gm NO v N2O. T khi ca X i vi kh H2 l 20,6. Khi lng mui
nitrat sinh ra trong dd l: A. 23,05g B. 13,13g C. 5,891g D. 7,64g
Cu 36. Ha tan hon ton 30,0 gam hn hp X gm Mg, Al, Zn trong dung dch
HNO 3,sau phn ng hon ton thu c dung dch Y v hn hp gm 0,1 mol N2O v
0,1 mol NO. C cn dung dch sau phn ng thu c 127 gam hn hp mui. Vy s
mol HNO3 b kh trong phn ng trn l : A. 0,45 mol B. 0,40 mol C. 0,30
mol D. 0,35 mol
Cu 37. Cho 5,75 gam hn hp Mg, Al, Cu tc dng vi dung dch HNO3
long, d thu c 1,12 lt (ktc) hn
hp kh X gm NO v N2O. T khi ca X i vi kh H2 l 20,6. Khi lng mui
nitrat sinh ra trong dung dch l : A. 27,45 gam B. 13,13 gam C. 55,7
gam D. 16,3 gam Cu 38. Cho m gam hn hp kim loi gm Al, Zn, Mg tan
trong V(lit) dung dch HNO3 0,01 M th va ng thi gii phng 2,688 lit(
ktc) hn hp kh gm NO v N2 c t khi so vi hidro l 44,5/3. Tnh V? A.
6,4 lit B. 0,64 lit C. 0,064 lit D. 64 lit Cu 39. Cho 1,35 g hn hp
Cu, Mg, Al tc dng ht vi dd HNO3 thu c hn hp kh gm 0,01 mol NO v
0,01 mol N2O. Khi lng mui c to ra trong dd l: A. 3,83g B. 6,93g C.
5,96g D. 8,17g Cu 40. Ha tan 10,71 gam hn hp gm Al, Fe, Zn trong 4
lt dung dch HNO 3 x (M) va thu c dung dch A v 1,792 lt hn hp kh gm
N2,N2O c t l mol 1: 1. C cn dung dch A thu c m(gam) mui khan. Gi tr
ca m (gam) v x (M) l A. 55,35 (g) v 2,2 (M) B. 55,35 (g) v 0,22 (M)
C. 53,55 (g) v 2,2 (M) D. 53,55 (g) v 0,22 (M) Cu 41. Ha tan 5,04
gam hn hp 3 kim loi X, Y, Z trong 100ml dung dch HNO 3 x (M) va thu
c m(gam) mui; 0,02 mol NO2 v 0,005 mol N2O. Gi tr ca x v m x l A.
0,9 (M) (g) v 8,76 (g) B. 0,9 (M) (g) v 7,76 (g) C. 0,9 (M) (g) v
8,67 (g) D. 0,8 (M) (g) v 8,76 (g) Cu 42. Ha tan hon ton 8 gam hn
hp kim loi bng dung dch HNO3 d thu c hn hp sn phm kh gm 0,1 mol NO
v 0,2 mol NO2. Khi lng mui c trong dung dch (khng c mui amoni) l A.
39 gam B. 34,9 gam C. 37,7 gam D. 27,3 gam Cu 43. Cho 13,4 gam hn
hp Fe, Al, Mg tc dng ht vi mt lng dung dch HNO3 2M (ly d 10%) thu c
4,48 lt hn hp NO, N2O c t khi i vi hiro l 18,5 v dung dch khng cha
mui amoni. Th tch dung dch HNO3 dng v khi lng mui c trong dung dch
sau phn ng l: A. 7,7 lt v 80 (g) B. 0,77 lt v 81,6 (g) C. 7,5 lt v
81 (g) D. 7,2 lt v 80 (g) Bai 1. X la hon hp N2 va H2, co t khoi so
vi H2 la 4,25. nung nong X mot thi gian trong bnh kn co chat xuc
tac thch hp, thu c hon hp kh co t khoi vi H2 la 6,8.Hieu suat cua
phan ng tong hp NH3 la: A. 25% B. 40% C. 50% D. 75% Bai 2. Hoa tan
het m gam Fe bang 400 ml dung dch HNO3 1M. sau khi phan ng xay ra
hoan toan thu c dung dch cha 26,44 gam chat tan va kh NO ( san pham
kh duy nhat).Gia tr cua m la: A. 7,84 B.6,12 C. 5,6 D. 12,24 Bai 3.
tien hanh phan ng nhiet nhom 10g hon hp X gom Al va Fe2O3 (trong
ieu kien khong co khong kh), thu c hon hp Y gom Fe, Fe3O4, FeO,
Fe2O3 va Al. Cho Y tac dung vi HNO3 loang d thu c 2,24 lt kh NO
(san pham kh duy nhat ktc). Phan tram khoi lng cua Fe2O3 trong X
la: A. 72% B. 73% C. 64% D. 50% Bai 4. Este hoa het cac nhom
hiroxyl co trong 8,1g xenluloz can va u x mol HNO3 ( co H2SO4 ac,
nong, xuc tac, hieu suat phan ng at 100%). Gia tr cua x la: A. 0,01
B. 0,15 C. 0,2 D. 0,25 Bai 5. Hoa tan a gam hon hp Cu va Fe (trong
o Fe chiem 30% ve khoi lng) bang 50 ml dung dch HNO3 63% (D= 1,38
g/ml). Sau khi phan ng xay ra hoan toan thu c chat ran X can nang
0,75a gam, dung dch Y va 6,104 lt hon hp kh NO va NO2 (ktc). Co can
dung dch Y thu c so gam muoi khan la: A. 75,15 B. 62,1 C. 37,575 D.
49,745 Bai 6. hoa tan hoan toan x mol CuFeS2 bang dung dch HNO3 ac
nong (d) sinh ra y mol NO2 (san pham kh duy nhat). Quan he gia x va
y la: A. y=17x B. x=15y C. x=17y D. y=15x Bai 7. Hoa tan hoan toan
19,2 gam ong bang dung dch HNO3 loang, toan bo lng NO (san pham kh
duy nhat) sinh ra c oxi hoa hoan toan bi oxi thanh NO2, roi suc vao
nc cung vi dong kh O2 e chuyen hoa het thanh HNO3. Tong the tch kh
O2 (ktc) a phan ng la: A. 3,36 lt B. 2,24 lt
C.4,48 lt D. 1,12 lt Bai 8. Phan lan supephotphat n co thanh
phan la: A. Ca(H2PO4)2 va CaSO4.2H2O B. Ca(H2PO4)2 C. Ca3(PO4)2 D.
Ca(H2PO4)2 va Ca3(PO4)2 Bai 9. Co 4 ong nghiem ng 4 dung dch FeCl3,
CuCl2, AlCl3, ZnCl2. Neu them t t dung dhc NaOH cho en d lan lt vao
4 ong nghiem tren, sau o them tiep dung dch NH3 d vao, th so ong
nghiem cuoi cung van co ket tua la: A. 1 B. 2 C. 3 D. 4 Bai 10. e
phan biet Fe2O3 va Fe3O4 ngi ta dung: A. dung dch NaOH B. dung dch
H2SO4 loang C. dung dch HCl D. dung dch HNO3 Bai 11. Tong he so (
cac so nguyen toi gian) cua tat ca cac chat trong phng trnh phan ng
gia Cu vi dung dch HNO3 ac, nong la: A. 8 B. 10 C. 11 D. 9 Bai 12.
e nhan biet 3 axit ac nguoi: HCl, H2SO4 va HNO3 ng rieng biet trong
3 lo mat nhan, ta dung thuoc th la: A. Cu B. CuO C. Al D. Fe Bai
13. Phan ng nhiet phan khong ung la:to A. 2KNO3 2KNO2 + O2 to C.
NH4Cl NH3 + HCl to B. NH4NO2 N2 + 2H2O to D. NaHCO3 NaOH +
CO2 Bai 14. Cho 2,16 gam Mg tac dung vi dung dch HNO3 d. Sau khi
phan ng xay ra hoan toan thu c 0,896 lt kh NO (ktc) va dung dch X.
Khoi lng muoi khan thu c khi lam bay hi dung dch X la: A. 8,88g B.
13,92g C. 6,52g D. 13,32g Bai 15. Thanh phan chnh cua quang
photphorit la: A. Ca3(PO4)2 B. NH4H2PO4 C. Ca(H2PO4)2 D. CaHPO4 Bai
16. Cho can bang hoa hoc: N2(k) + 3H2(k) 2NH3(k) , phan ng thuan
nghch la phan ng toa nhiet. Can bang hoa hoc khong b chuyen dch
khi: A. thay oi ap suat cua he B. thay oi nong o N2 C. them chat
xuc tac Fe D. thay oi nhiet o Bai 17. the tch dung dch HNO3 67,5%
(khoi lng rieng la 1,5 g/ml) can dung e tac dung het vi xenliloz
tao thanh 89,1 kg xenluloz nitrat la (biet lng HNO3 b hao hut la
20%) A. 55 lt B. 81 lt C. 49 lt D. 70 lt Bai 18. Cho m gam hon hp X
gom Al, Cu vao dung dch HCl d, sau khi ket thuc phan ng sinh ra
3,36 lt kh (ktc). Neu cho m gam hon hp X tren vao mot lng d axit
nitric ac nguoi, sau khi phan ng ket thuc sinh ra 6,72 lt kh NO2
(san pham kh duy nhat, ktc). Gia tr cua m la: A. 11,5 B. 10,5 C.
12,3 D. 15,6 Bai 19. Cho cac phan ng sau:to H2S + O2 (d) kh X + H2O
8500C, Pt NH3 + O2 kh Y + H2O NH4HCO3 + HCl (loang) kh Z + NH4Cl +
H2O Cac kh X, Y, Z lan lt la: A. SO3, NO, NH3 B. SO2, N2, NH3 C.
SO2, NO, CO2 D. SO3, N2, CO2
Bai 20. Cong thc phan t cua hp chat kh tao bi nguyen to R va
hiro la RH3. Trong oxit ma R co hoa tr cao nhat th oxi chiem 74,07%
ve khoi lng. Nguyen to R la: A. S B. As C. N D. P Bai 21. Cho 0,1
mol P2O5 vao dung dch cha 0,35 mol KOH. Dung dch thu c co cac chat:
A. K3PO4, K2HPO4 B. K2HPO4, KH2PO4 C. K3PO4, KOH D. H3PO4, KH2PO4
Bai 22. The tch dung dch HNO3 1M (loang) t nhat can dung e hoa tan
hoan toan mot hon hp gom 0,15 mol Fe va 0,15 mol Cu la (biet phan
ng tao chat kh duy nhat la NO) A. 1 lt B. 0,6 lt C. 0,8 lt D. 1,2
lt Bai 23. Cho cac phan ng sau:t (1) Cu(NO3)2 850oC,Pt (3) NH3 + O2
o to (2) NH4NO2 to (4) NH3 + Cl2
to to (5) NH4Cl (6) NH3 + CuO Cac phan ng tao kh N2 la: A. (3),
(5), (6) B. (1), (3), (4) C. (1), (2), (5) D. (2), (4), (6) Bai 24.
Cho Cu va dung dch H2SO4 loang tac dung vi chat X (mot loai phan
bon hoa hoc), thay thoat ra kh khong mau hoa nau trong khong kh.
Mat khac, khi X tac dung vi dung dch NaOH th co kh mui khai thoat
ra. Chat X la: A. ure B. natri nitrat C. amoni nitrat D. amophot
Bai 25. Cho 3,2g bot Cu tac dung vi 100ml dung dch hon hp gom HNO3
0,8M va H2SO4 0,2M. Sau khi cac phan ng xay ra hoan toan, sinh ra V
lt kh NO (san pham kh duy nhat, ktc). Gia tr cua V la: A. 0,448 B.
0,792 C. 0,672 D. 0,746 Bai 26. Cho 11,36g hon hp gom Fe, FeO,
Fe2O3 va Fe3O4 phan ng het vi dung dch HNO3 loang, d thu c 1,344 lt
kh NO (san pham kh duy nhat, ktc) va dung dch X. Co can dung dch X
thu c m gam muoi khan. Gia tr cua m la: A. 38,72 B. 49,09 C. 35,5
D. 34,36 Bai 27. Khi cho Cu tac dung vi dung dch cha H2SO4 loang va
NaNO3, vai tro cua NaNO3 trong phan ng la: A. chat xuc tac B. chat
kh C. chat oxi hoa D. moi trng Bai 28. Cho hon hp Fe, Cu phan ng vi
dung dch HNO3 loang. Sau khi phan ng hoan toan, thu c dung dch ch
cha mot chat tan va ki loai d. Chat tan o la: A. HNO3 B. Fe(NO3)2
C. Cu(NO3)2 D. Fe(NO3)3 Bai 29. Trong phong th nghiem, ngi ta ieu
che HNO3 t: A. NH3 va O2 B.NaNO2 va H2SO4 ac C. NaNO3 va H2SO4 ac
D. NaNO3 va HCl ac Bai 30. Nung m gam bot sat trong oxi, thu c 3
gam hon hp chat ran X. Hoa tan het hon hp X trong dung dch HNO3 d,
thoat ra 0,56 lt NO (san pham kh duy nhat, ktc). Gia tr cua m la:
A. 2,62 B. 2,32 C. 2,52 D. 2,22
Bai 31. Xenluloz trinitrat c ieu che t xenluloz va axit nitric
ac co xuc tac axit sunfuric ac, nong. e co 29,7 kg xenluloz
trinitrat can dung dung dch cha m gam axit nitric (hieu suat phan
ng at 90%). Gia tr cua m la: A. 30kg B. 21kg C. 42kg D. 10kg Bai
32.. Hoa tan hoan toan hon hp gom 0,12 mol FeS2 va a mol Cu2S vao
axit HNO3 (va u), thu c dung dch X (ch cha hai muoi sunfat) va kh
duy nhat NO. Gia tr cua a la: A. 0,04 B. 0,075 C. 0,12 D. 0,06 Bai
33. Trong phong th nghiem, e ieu che mot lng nho kh X tinh khiet,
ngi ta un nong dung dch amoni nitrit bao hoa. Kh X la: A. NO B. NO2
C. N2O D. N2 Bai 34. Hoa tan hoan toan 12 gam hon hp Fe, Cu (t le
mol 1:1) bang axit HNO3, thu c V lt hon hp kh X (gom NO va NO2) va
dung dch Y ch cha hai muoiva axit d). T khoi cua X oi vi H2 bang
19. Gia tr cua V la: A. 2,24 B. 4,48 C. 5,6 D. 3,36 Bai 35. Cho tng
chat: Fe, FeO, Fe(OH)2, Fe(OH)3, Fe2O3, Fe3O4, Fe(NO3)2, Fe(NO3)3,
FeSO4, Fe2(SO4)3, FeCO3 lan lt tac dung vi HNO3 ac, nong. So phan
ng thuoc loai phan ng oxi hoa kh la: A. 8 B. 5 C. 7 D. 6 Bai 36.
Amophot la hon hp cha: A. KH2PO4 va (NH4)2HPO4 B. KH2PO4 va
(NH4)3PO4 C. (NH4)3PO4 va (NH4)2HPO4 S.NH4H2PO4 va (NH4)2HPO4 Bai
37. Cho 5,6 gam bot Fe tac dung vi kh oxi thu c 7,52 gam hon hp ran
X. Cho hon hp ran X tac dung vi dung dch HNO3 d, thu c V lt kh NO
(san pham kh duy nhat, ktc). Gia tr cua v la: A. 0,448 B. 0,224 C.
4,48 D. 2,24
Gio vin Nguyn Vn Cnh
Bai tap Nit- photphoBai 1. X la hon hp N2 va H2, co t khoi so vi
H2 la 4,25. nung nong X mot thi gian trong bnh kn co chat xuc tac
thch hp, thu c hon hp kh co t khoi vi H2 la 6,8.Hieu suat cua phan
ng tong hp NH3 la: A. 25% B. 40% C. 50% D. 75% Bai 2. hoa tan hoan
toan x mol CuFeS2 bang dung dch HNO3 ac nong (d) sinh ra y mol NO2
(san pham kh duy nhat). Quan he gia x va y la: A. y=17x B. x=15y C.
x=17y D. y=15x Bai 3. Hoa tan ht 19,2 gam ong bang dd HNO3 loang,
toan bo lng NO (san pham kh duy nhat) sinh ra c oxi hoa hoan toan
bi oxi thanh NO2, roi suc vao nc cung vi dong kh O2 e chuyen hoa
het thanh HNO3. Tong the tch kh O2 (ktc) a phan ng la: A. 3,36 lt
B. 2,24 lt C.4,48 lt D. 1,12 lt Bai 4. Phan lan supephotphat n co
thanh phan la: A. Ca(H2PO4)2 va CaSO4.2H2O B. Ca(H2PO4)2 C.
Ca3(PO4)2 D. Ca(H2PO4)2 va Ca3(PO4)2 Bai 5. Co 4 ong nghiem ng 4
dung dch FeCl3, CuCl2, AlCl3, ZnCl2. Neu them t t dd NaOH cho en d
lan lt vao 4 ong nghiem tren, sau o them tiep dd NH3 d vao, th so
ong nghiem cuoi cung van co ket tua la: A. 1 B. 2 C. 3 D. 4 Bai 6.
e phan biet Fe2O3 va Fe3O4 ngi ta dung: A. dung dch NaOH B. dung
dch H2SO4 loang C. dung dch HCl D. dung dch HNO3 Bai 7. e nhan biet
3 axit ac nguoi: HCl, H2SO4 va HNO3 ng rieng biet trong 3 lo mat
nhan, ta dung thuoc th la: A. Cu B. CuO C. Al D. Fe Bai 8. Cho phng
trnh ho hc: Fe3O4 + HNO3 Fe(NO3)3 + NxOy + H2O Sau khi cn bng
phngtrnh 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.
Bai 9. Cho can bang hoa hoc: N2(k) + 3H2(k) 2NH3(k) , phan ng
thuan nghch la phan ng toa nhiet. Can bang hoa hoc khong b chuyen
dch khi: A. thay oi ap suat cua he B. thay oi nong o N2 C. them
chat xuc tac Fe D. thay oi nhiet o Bai 10. Cho m gam hh X gom Al,
Cu vao dd HCl d, sau khi ket thuc p sinh ra 3,36 lt kh (ktc). Neu
cho m gam hon hp X tren vao mot lng d axit nitric ac nguoi, sau khi
p ket thuc sinh ra 6,72 lt kh NO2 (san pham kh duy nhat, ktc). Gia
tr cua m la: A. 11,5 B. 10,5 C. 12,3 D. 15,6 Bai 11. Cho 0,1 mol
P2O5 vao dung dch cha 0,35 mol KOH. Dung dch thu c co cac chat: A.
K3PO4, K2HPO4 B. K2HPO4, KH2PO4 C. K3PO4, KOH D. H3PO4, KH2PO4to
Bai 12. Cho cac phan ng sau: (1) Cu(NO3)2 850oC,Pt (3) NH3 + O2 to
(4) NH3 + Cl2 to (2) NH4NO2 to (5) NH4Cl
(6) NH3 +
to CuO Cac phan ng tao kh N2 la: A. (3), (5), (6) B. (1), (3),
(4) C. (1), (2), (5) D. (2), (4), (6) Bai 13. Cho 3,2g bot Cu tac
dung vi 100ml dung dch hon hp gom HNO3 0,8M va H2SO4 0,2M. Sau khi
cac phan ng xay ra hoan toan, sinh ra V lt kh NO (san pham kh duy
nhat, ktc). Gia tr cua V la: A. 0,448 B. 0,792 C. 0,672 D. 0,746
Bai 14. Khi cho Cu tac dung vi dung dch cha H2SO4 loang va NaNO3,
vai tro cua NaNO3 trong phan ng la: A. chat xuc tac B. chat kh C.
chat oxi hoa D. moi trng Bai 15. Trong phong th nghiem, ngi ta ieu
che HNO3 t:
A. NH3 va O2 B.NaNO2 va H2SO4 ac C. NaNO3 va H2SO4 ac D. NaNO3
va HCl ac Bai 16. Trong phong th nghiem, e ieu che mot lng nho kh X
tinh khiet, ngi ta un nong dung dch amoni nitrit bao hoa. Kh X la:
A. NO B. NO2 C. N2O D. N2 Bi 17. Ha tan hon ton 16,2 gam mt kim loi
ha tr cha r bng dung dch HNO 3 c 5,6 lt (ktc) hn hp A nng 7,2 gam
gm NO v N2. Kim loi cho l : A. Cr B. Fe C. Al D. Mg Bi 18. Ho tan
hon ton m gam Cu trong dung dch HNO3 thu c 1,12 lt hn hp kh NO v
NO2 (ktc) c t khi hi i vi H2 l 16,6. Gi tr ca m l A. 8,32. B. 3,90.
C. 4,16. D. 6,40. Bi 19. Ha tan hon ton 12,8 gam Cu trong dung dch
HNO 3 thu c V lt hn hp kh X ( ktc ) gm NO 2 v NO . Bit t khi ca X
so vi H2 l 19 . Vy V lt bng : A. 4,48lt B. 2,24lt C. 3,36lt D.
6,72lt
Bi 20. Ho tan 8,32g Cu vo 3 lt dung dch HNO 3 (va ) c 4,928 lt
hn hp NO, NO 2 (ktc). Tnh khi lng 1 lt hn hp NO, NO2 ktc v CM dung
dch HNO3 A. 1,99g; 0,16M B. 1,74g; 0,18M C. 2,14,; 0,15M D. 2,12g;
0,14M Bi 21. Ho tan hon ton 24,3g Al vo dd HNO3 long d thu c V lt
hn hp kh (ktc) gm NO v N2O c t khi hi so vi H2 l 20,25. Gi tr ca V
l A. 6,72. B. 2,24. C. 8,96. D. 11,20. Bi 22. Cho a gam Al p ht vi
axt HNO 3 thu c 8,96lt ( ktc ) hh kh NO v N 2O c t khi hi so vi
hydro bng 16,75. Vy khi lng a gam l : A. 17,5 B. 13,5 C. 15,3 D. C
kt qu khc Bi 23. Chia hn hp gm 2 kim loi X, Y c ho tr khng i thnh 2
phn bng nhau: + Phn 1: Ho tan hon ton trong dung dch hn hp gm HCl v
H2SO4 thu c 3,36 lt H2( ktc). + Phn 2: Ho tan hon ton trong dung
dch HNO3 thu c V lt NO duy nht ( ktc). Gi tr ca V l A. 2,24 lt. B.
3,36 lt. C. 4,48 lt. D. 5,60 lt. Bi 24. Hn hp X gm Al, Cu c khi lng
59g. Ho tan X trong 3 lt dd HNO 3 c hn hp Y gm NO, N2 (mi kim loi
ch to 1 kh) v li mt cht rn khng tan. Bit hn hp Y c d/kk = 1 v V =
13,44 lt (ktc). Tnh khi lng ca Al, Cu trong hh u v CM ca dung dch
HNO3. A. 27g Al; 32g Cu; 1,6M B. 35g Al; 24g Cu; 1,2M C. 27g Al;
32g Cu; 1,4M D. 33,5g Al; 25,5g Cu; 1,6M Bi 25. Chia hn hp 2 kim
loi c ho tr khng i lm 2 phn bng nhau. Phn 1 tan ht trong dung dch
HCl to ra 1,792 lt H2 (ktc). Phn 2,nung trong oxi thu c 2,84 gam hn
hp oxit. Khi lng hn hp 2 kim loi ban u l: A. 2,2 gam B. 3,12 gam C.
2,4 gam D. 1,56 gam Bi 26. Ha tan 1 hh X gm 2 kim loi A, B trong
axit HNO3 long. Kt thc p thu c hn hp kh Y c 0,1 mol NO ; 0,15 mol
NO2 v 0,05 mol N2O. Bit rng khng c p to mui NH4NO3. S mol HNO3 phn
ng: A. 0,75 mol B. 0,9 mol C. 1,2 mol D. 1,05 mol Bi 27. Cho 12,9
gam hn hp Al v Mg tc dng hon ton vi dung dch hn hp gm H 2SO4 v HNO3
thu c 0,1 mol mi kh SO2; NO; N2O. Khi lng Al c trong hn hp l A.
8,10 g. B. 5,40 g. C. 4,05 g. D. 6,75 g. HNO3 thu c mui nitrat v
0,7168 Bi 28. Ha tan hon ton 3,416 gam hn hp Ag, Cu trong dung dch
lt hn hp NO v NO2 (ktc), t khi hi ca B i vi H2 bng 19. Tnh khi lng
Ag; Cu trong hn hp l: A. 1,449g v 1,967g B. 1,944g v 1,472g C.
1,08g v 2,336g D. 2,16g v 1,256g Bi 29. Ho tan hon ton 8,5 gam hn
hp Zn, Mg bng dung dch H2SO4 c thu c 1,12 lt SO2 ( ktc) v 1,6 gam S
v dung dch X. Khi lng mui khan trong dung dch X l A. 18,1 g. B.
24,8 g. C. 28,1 g. D. Kt qu khc Bi 30. Cho 1,35 gam hn hp X gm Cu,
Al, Mg tc dng ht vi dung dch HNO3,thu c 1,12 lt hn hp kh gm NO v
NO2 c t khi so vi H2 bng 21,4. Khi lng mui to thnh trong dung dch l
: A. 5,69 gam B. 5,45 gam C. 4,54 gam D. 5,05 gam Bi 31. Ha tan hon
ton 30,0 gam hn hp X gm Mg, Al, Zn trong dung dch HNO 3,sau phn ng
hon ton thu c dung dch Y v hn hp gm 0,1 mol N2O v 0,1 mol NO. C cn
dung dch sau phn ng thu c 127 gam hn hp mui. Vy s mol HNO3 b kh
trong phn ng trn l : A. 1,02 mol B. 0,60 mol C. 0,30 mol D. 0,66
mol Bi 32. Ha tan kim loi M vo HNO3 thu c dung dch A(khng c kh thot
ra). Cho NaOH d vo dung dch A thu c 2,24 lt kh (ktc) v 23,2g kt ta.
Xc nh M. A. Fe B. Mg C. Al D. Ca Bi 33. Cho m gam hn hp kim loi gm
Al, Zn, Mg tan trong V(lit) dung dch HNO3 0,01 M th va ng thi gii
phng 2,688 lit( ktc) hn hp kh gm NO v N2 c t khi so vi hidro l
44,5/3. Tnh V? A. 6,4 lit B. 0,64 lit C. 0,064 lit D. 64 lit
Bi 34. Ha tan 10,71 gam hh gm Al, Fe, Zn trong 4 lt dd HNO3 x
(M) va thu c dd A v 1,792 lt hn hp kh gm N2,N2O c t l mol 1: 1. C
cn dd A thu c m(gam) mui khan. Gi tr ca m (gam) v x (M) l A. 55,35
(g) v 2,2 (M) B. 55,35 (g) v 0,22 (M) C. 53,55 (g) v 2,2 (M) D.
53,55 (g) v 0,22 (M) Bi 35. Cho 13,4 gam hn hp Fe, Al, Mg td ht vi
mt lng dung dch HNO3 2M (ly d 10%) thu c 4,48 lt hn hp NO, N2O c t
khi i vi hiro l 18,5 v dung dch khng cha mui amoni. Th tch dung dch
HNO3 dng v khi lng mui c trong dung dch sau phn ng l: A. 7,7 lt v
80 (g) B. 0,77 lt v 81,6 (g) C. 7,5 lt v 81 (g) D. 7,2 lt v 80 (g)
Bi 36 : Cho 6,84 gam Mg tac dung vi dung dch HNO3 d. Sau khi phan
ng xay ra hoan toan thu c 2,688 lt kh NO (ktc) va dd X. Khoi lng
muoi khan thu c khi lam bay hi dd X la: A. 26,64g B. 41,76g C.
19,56g D. 39,96g Bi 37: C 15,06 gam mt hh A gm Fe v mt kim loi R (h
t khng i) c chia thnh 2 phn =. Phn 1: Ha tan ht vi dd HCl thu c
3,696 lt kh ktc. Phn 2: Ha tan ht vi dd HNO3 long thu c 3,36 lt
(ktc) mt kh khng mu ha nu ngoi khng kh duy nht. Tm R. A. Fe B. Mg
C. Al D. Zn
