16 Chuyen de on Thi Dai Hoc

Chu Anh Tun -- 0935166002 Trng THPT s 1 Ngha Hnh

16 chuyn n thi i hc, cao ng 2012 - 2013 Trang 1

Lu hanh noi bo

Thang 1 nam 2013



Chuyn 1: CU TO NGUYN T, BNG TUN HON CC NGUYN T

Cu 1. Cu hnh electron ca nguyn t Mg (Z = 12) l A. 1s

22s

22p

63s

23p

1. B. 1s

22s

22p

63s

2. C. 1s

22s

22p

63s

1. D. 1s

22s

22p

6.

Cu 2. Cu hnh electron lp ngoi cng ca nguyn t kim loi kim th l A. ns

2np

2. B. ns

2np

1. C. ns

2. D. ns

1.

Cu 3. Cu hnh electron lp ngoi cng ca nguyn t nguyn t Al (Z = 13) l A. 3s

23p

1. B. 3s

13p

2. C. 3s

23p

3. D. 3s

23p

2.

Cu 4.Cng thc chung ca cc oxit kim loi nhm IIA l A. RO2. B. R2O3. C. R2O. D. RO. Cu 5.Cng thc chung ca oxit kim loi thuc phn nhm chnh nhm I l A. RO2. B. R2O3. C. R2O. D. RO. Cu 6.Cng thc chung ca oxit kim loi thuc phn nhm chnh nhm II l A. RO. B. R2O3. C. R2O. D. RO2. Cu 7.Dy cc hiroxit c xp theo th t tnh baz gim dn t tri sang phi l A. Mg(OH)2, NaOH, Al(OH)3. B. Mg(OH)2, Al(OH)3, NaOH. C. NaOH, Al(OH)3, Mg(OH)2. D. NaOH, Mg(OH)2, Al(OH)3. Cu 8.Hai kim loi u thuc nhm IIA trong bng tun hon l A. Sr, K. B. Be, Al. C. Ca, Ba. D. Na, Ba. Cu 9.Nguyn t kim loi c cu hnh electron 1s

22s

22p

63s

1 l

A. Li (Z = 3). B. Mg (Z = 12). C. Na (Z = 11). D. K (Z = 19). Cu 10.S electron lp ngoi cng ca cc nguyn t kim loi thuc phn nhm chnh nhm II l A. 1. B. 3. C. 4. D. 2. Cu 11.S electron lp ngoi cng ca nguyn t kim loi kim l A. 2. B. 1. C. 3. D. 4. Cu 12.Tnh baz ca cc hiroxit c xp theo th t gim dn t tri sang phi l A. NaOH, Mg(OH)2, Al(OH)3. B. NaOH, Al(OH)3, Mg(OH)2. C. Mg(OH)2, NaOH, Al(OH)3. D. Mg(OH)2, Al(OH)3, NaOH. Cu 13.Trong bng tun hon cc nguyn t ha hc, kim loi kim thuc nhm A. IVA. B. IIIA. C. IA. D. IIA. Cu 14. Cho cc hiroxit: NaOH, Mg(OH)2, Fe(OH)3, Al(OH)3. Hiroxit c tnh baz mnh nht l A. Al(OH)3. B. Fe(OH)3. C. NaOH. D. Mg(OH)2. Cu 15.Dy cc kim loi c xp theo chiu gim dn tnh kh l: A. K, Zn, Cu. B. Cu, K, Zn. C. K, Cu, Zn. D. Zn, Cu, K. Cu 16.St (Fe) s 26 ca bng tun hon cc nguyn t ha hc. Cu hnh electron ca ion Fe

3+ l

A. [Ar]3d6. B. [Ar]4s

13d

4. C. [Ar]4s

23d

3. D. [Ar]3d

5.

Cu 17.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. Y < M < X < R. B. M < X < Y < R. C. R < M < X < Y. D. M < X < R < Y. Cu 18.Trong bng tun hon cc nguyn t ho hc, nguyn t X nhm IIA, nguyn t Y nhm VA. Cng thc ca hp cht to thnh t 2 nguyn t trn c dng l A. X5Y2. B. X3Y2. C. X2Y5. D. X2Y3. Cu 19.Nguyn t ca nguyn t X c cu hnh electron 1s

22s

22p

63s

23p

64s

1, nguyn t ca nguyn t Y c cu

hnh electron 1s22s

22p

5. Lin kt ho hc gia nguyn t X v nguyn t Y thuc loi lin kt

A. cng ho tr. B. ion. C. cho nhn. D. kim loi. Cu 20. Dy gm cc cht trong phn t ch c lin kt cng ho tr phn cc l: A. HCl, O3, H2S. B. HF, Cl2, H2O. C. O2, H2O, NH3. D. H2O, HF, H2S. Cu 21. 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. phi kim v kim loi. B. kim loi v kim loi. C. kh him v kim loi. D. kim loi v kh him. Cu 22. Lin kt ho hc gia cc nguyn t trong phn t H2O l lin kt A. cng ho tr phn cc. B. ion. C. cng ho tr khng phn cc. D. hiro.



Cu 23.Cc kim loi X, Y, Z c cu hnh electron nguyn t ln lt l: 1s22s

22p

63s

1; 1s

22s

22p

63s

2;

1s22s

22p

63s

23p

1. Dy gm cc kim loi xp theo chiu tng dn tnh kh t tri sang phi l:

A. Z, X, Y. B. Y, Z, X. C. Z, Y, X. D. X, Y, Z. Cu 24.Anion X

- v cation Y

2+u c cu hnh electron lp ngoi cng l 3s

23p

6. V tr ca cc nguyn t trong

bng tun hon cc nguyn t ha hc l: A. 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). B. 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). C. 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). D. 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). Cu 25. Dy gm cc ion X

+, Y

- v nguyn t Z u c cu hnh electron 1s

22s

22p

6 l:

A. Na+, Cl

-, Ar. B. Na

+, F

-, Ne. C. Li

+, F

-, Ne. D. K

+, Cl

-, Ar.

Cu 26.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. tnh phi kim gim dn, bn knh nguyn t tng dn. D. m in gim dn, tnh phi kim tng dn. Cu 27. 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, Na, O, Li. B. F, Li, O, Na. C. F, O, Li, Na. D. Li, Na, O, F. Cu 28. Hp cht trong phn t c lin kt ion l A. NH4Cl. B. H2O. C. HCl. D. NH3. Cu 29. 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, O, F. D. N, P, F, O. Cu 30. Cu hnh electron ca ion X

2+ l 1s

22s

22p

63s

23p

63d

6. Trong bng tun hon cc nguyn t ho hc, nguyn

t X thuc A. chu k 4, nhm VIIIA. B. chu k 4, nhm IIA. C. chu k 4, nhm VIIIB. D. chu k 3, nhm VIB. Cu 31.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, Si, N. B. N, Si, Mg, K. C. K, Mg, N, Si. D. Mg, K, Si, N. Cu 32.Pht biu no sau y l ng? A. Photpho trng c cu trc tinh th nguyn t. B. Kim cng c cu trc tinh th phn t. C. Nc thuc loi tinh th phn t. D. th rn, NaCl tn ti di dng tinh th phn t. Cu 33.Cc nguyn t t Li n F, theo chiu tng ca in tch ht nhn th A. bn knh nguyn t v m in u tng. B. bn knh nguyn t tng, m in gim. C. bn knh nguyn t v m in u gim. D. bn knh nguyn t gim, m in tng. Cu 34.Nhn nh no sau y ng khi ni v 3 nguyn t:

2613X,5526Y,

2612Z?

A. X v Y c cng s ntron. B. X, Z l 2 ng v ca cng mt nguyn t ho hc.

C. X v Z c cng s khi. D. X, Y thuc cng mt nguyn t ho hc. Cu 35.Cc cht m phn t khng phn cc l: A. HBr, CO2, CH4. B. Cl2, CO2, C2H2. C. HCl, C2H2, Br2. D. NH3, Br2, C2H4. Cu 36.Cu hnh electron ca ion Cu

2+ v Cr

3+ ln lt l

A. [Ar]3d74s

2 v [Ar]3d

14s

2. B. [Ar]3d

9 v [Ar]3d

3.

C. [Ar]3d74s

2 v [Ar]3d

3. D. [Ar]3d

9 v [Ar]3d

14s

2.

Cu 37. Pht biu no sau y l sai? A. Tinh th nc , tinh th iot u thuc loi tinh th phn t. B. Trong tinh th nguyn t, cc nguyn t lin kt vi nhau bng lin kt cng ho tr. C. Trong tinh th NaCl, xung quanh mi ion u c 6 ion ngc du gn nht. D. Tt c cc tinh th phn t u kh nng chy v kh bay hi. Cu 38.Cu hnh electron ng ca nguyn t Cu (Z = 29) l:

A. 1s22s22p63s23p63d104s1 B. 1s22s22p63s23p63d94s2

C. 1s22s22p63s23p64s13d10 D. 1s22s22p63s23p64s23d9 Cu 39.Cu hnh electron lp v ngoi cng ca mt ion l 2p6. Cu hnh electron ca nguyn t to ra ion l:



A. 1s2 2s2 2p5. B. 1s2 2s2 2p4. C. 1s

2 2s2 2p6 3s1. D. Tt c u c th ng. Cu 40.Cho ba nguyn t c cu hnh electron ln lt l: X: 1s22s22p63s1 ; Y: 1s22s22p63s2 ; Z: 1s22s22p63s23p1. Hiroxit ca X, Y, Z xp theo th t tng dn tnh baz l: A. XOH < Y(OH)2 < Z(OH)3 B. Y(OH)2 < Z(OH)3 < XOH C. Z(OH)3 < Y(OH)2 < XOH D. Z(OH)2 < Y(OH)3 < XOH Cu 41.Cho cc cht sau: HCl, NaCl, LiCl, NH4Cl, HF. S cht m phn t ch gm lin kt cng ho tr l: A. 1 B. 3 C. 4 D. 2 Cu 42.Cho cc nguyn t v ion sau: Na, Na+, Mg2+, Mg, Al, Al3+, F-, O2-. Th t gim dn theo bn knh nguyn t l:

A. Na >Mg >Al >O2-

>F-

>Na+

>Mg2+

>Al3+

B. Mg2+

>Al3+

>Na+

>O2-

>F-

>Mg >Al >Na

C. Na >Mg >Al >Na+

>Mg2+

>Al3+

>O2-

>F-

D. Na+

>Mg2+

>Al3+

>O2-

> F-

>Na > Mg >Al

Cu 43.Cho cu hnh e ca ion X2+ l:[Ar] 3d4 cu hnh ca nguyn t X l: A. [Ar] 3d6. B. [Ar] 4s13d5. C. [Ar] 3d44s2 D. [Ar] 3d54s1. Cu 44.Cho cu hnh e ca ion X2+ l:1s22s22p63s23p63d4 cu hnh ca nguyn t X l: A. 1s22s22p63s23p64s23d6 B. 1s22s22p63s23p64s13d5 C. 1s22s22p63s23p63d44s2 D. 1s22s22p63s23p63d54s1 Cu 45. Cho ion X2-(Z=16) .Vy cu hnh electron ca nguyn t X l A. 1s22s22p63s2 3p4 B. 1s22s22p63s23p6 C. 1s22s22p63s23p5 D. 1s22s22p63s23p2 Cu 46. phn cc lin kt trong cc cht CH4 , NH3 , H2O , HF tng dn t tri sang phi theo trt t no sau y A. CH4 , NH3 , H2O , HF B. H2O , NH3 , CH4 , HF C. HF , H2O , NH3 , CH4 D. NH3 , CH4 , HF , H2O Cu 47.Ha tan st kim loi trong dung dch HCl. Cu hnh electron ca cation kim loi c trong dung dch thu c l A. [Ar] 3d5 B. [Ar] 3d6 C. [Ar] 3d54s1 D. [Ar] 3d44s2 Cu 48.Kt lun no biu th ng v kch thc ca nguyn t v ion?

A. Na < Na+, F > F-. B. Na < Na+, F < F-. C. Na > Na+, F > F-. D. Na > Na+, F < F-. Cu 49.Trong 20 nguyn t u tin ca bng tun hon, c bao nhiu nguyn t c 2 electron c thn trng thi c bn A. 2 B. 4 C. 5 D. 6. Cu 50.Trong cu hnh electron ca nguyn t nguyn t M, phn lp electron c mc nng lng cao nht l 3d7. V tr ca nguyn t M trong bng tun hon l: A. Chu k 3, nhm VII.B B. Chu k 3, nhm VIII.B C. Chu k 4, nhm VII.B D. Chu k 4, nhm VIII.B Cu 51.X l nguyn t c 12 proton, Y l nguyn t c 17 electron.Cng thc hp cht hnh thnh gia hai nguyn t ny c th l ? A. X2Y3 B. XY2 C. X2Y D. XY Cu 52.X v Y l 2 kim loi thuc nhm A. Bit ZX + ZY = 32 v ZX < ZY. Kt lun ng l A. tnh kim loi ca X > Y B. nng lng ion ha I1 ca X < Y C. X v Y u c 2e lp ngoi cng D. bn knh nguyn t ca X > Y Cu 53.Trong t nhin, nguyn t ng c hai ng v l

63Cu v

65 Cu. Nguyn t khi trung bnh ca ng l

63,54. Thnh phn phn trm tng s nguyn t ca ng v 63Cu l A. 50%. B. 54%. C. 73%. D. 27%. Cu 54. 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. Na v Cl. B. Al v Cl. C. Al v P. D. Fe v Cl. Cu 55. 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. 23. B. 15. C. 18. D. 17. Cu 56. 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. Cu 57. Cng thc phn t ca hp cht kh to bi nguyn t R v hiro l RH3. Trong oxit m Rc ho tr cao nht th oxi chim 74,07% v khi lng. Nguyn t R l A. P. B. As. C. N. D. S. Cu 58. Nguyn t ca nguyn t X c cu hnh electron lp ngoi cng l ns

2np

4. 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. 27,27%. B. 60,00%. C. 40,00%. D. 50,00%. Cu 59. Mt ion M

3+ c tng s ht proton, ntron, electron l 79, trong s ht mang in nhiu hn s ht

khng mang in l 19. Cu hnh electron ca nguyn t M l A. [Ar]3d

64s

1. B. [Ar]3d

34s

2. C. [Ar]3d

54s

1. D. [Ar]3d

64s

2.



Cu 60. Khi lng ring ca canxi kim loi l 1,55 g/cm3. Gi thit rng, trong tinh th canxi cc nguyn t l

nhng hnh cu chim 74% th tch tinh th, phn cn li l khe rng. Bn knh nguyn t canxi tnh theo l thuyt l A. 0,155 nm. B. 0,185 nm. C. 0,196 nm. D. 0,168 nm. Cu 61. Trong t nhin clo c hai ng v bn: Cl35 chim 24,23% tng s nguyn t, cn li l Cl37. Thnh phn % theo khi lng ca

Cl37 trong HClO4 l

A. 8,56%. B. 8,79%. C. 8,92%. D. 8,43%. Cu 62.Gi s H c 3 ng v, S c 1 ng v, O c 3 ng v. S phn t H2SO4 c th c l: A. 72 B. 90 C. 378 D. kt qu khc Cu 63.Hai nguyn t X v Y thuc cng mt chu k v hai nhm A lin tip c tng s ht proton l 25. Vy v tr ca X v Y trong bng h thng tun hon l: A. chu k 3, nhm IIIA v IVA. B. chu k 3, nhm VIA v VIIA. C. chu k 3, nhm IIA v IIIA. D. chu k 2, nhm VIIA v VIIIA. Cu 64.Nguyn t X c hai ng v, c t l s nguyn t ca ng v I v II l 27/23. Ht nhn ca X c 35 proton. ng v I c 44 ntron, ng v II c nhiu hn ng v I l 2 ntron. Nguyn t khi trung bnh ca nguyn t X l: A. 79,2 B. 78,9 C. 79,92 D. 80,5 Cu 65.Nguyn t nguyn t X c tng s ht (p, n, e) l 76, trong s ht mang in nhiu hn s ht khng mang in l 20 ht. Cu hnh electron nguyn t nguyn t X l:

A. 1s22s22p63s23p63d54s1 B. 1s22s22p63s23p63d44s2

C. 1s22s22p63s23p64s13d5 D. 1s22s22p63s23p64s23d4 Cu 66.Phn t R

nX c 82 ht proton. Tng s ht proton, electron, ntron trong nguyn t R v X ln lt l 122

v 24. S hiu nguyn t R l: A. 37 B. 38 C. 40 D. 42 Cu 67.Tng s ht c bn trong ion X2- l 50 v trong X2- c s ht mang in gp 2,125 ln s ht khng mang in. S ht proton, notron, electron trong X l A. 16, 16, 18 B. 16, 16, 16 C. 17, 17, 16 D. 17, 16, 17 Cu 68.Trong t nhin Cu c 2 ng v 29Cu

65 v 29Cu63. Khi lng nguyn t trung bnh ca Cu l 63,54. Bit

MCl = 35,5. Thnh phn % v khi lng ca 29Cu63 trong CuCl2 l

A. 12,64% B. 26,77% C. 27,00% D. 34,18%

Chuyn 2: PHN NG OXIHA-KH CN BNG, TC PHN NG

Phn 1. L THUYT PHN NG OXIHO - KH. Cu 1. Cho phn ng: a Fe + b HNO3 c Fe(NO3)3 + d NO + e H2O. Cc h s a, b, c, d, e l nhng s nguyn, n gin nht. Tng (a+b) bng A. 5. B. 6. C. 4. D. 3. Cu 2. Phn ng thuc loi phn ng oxi ho - kh l A. CaCO3 + 2HCl CaCl2 + CO2 + H2O. B. Zn + CuSO4 ZnSO4 + Cu. C. MgCl2 + 2NaOH Mg(OH)2 + 2NaCl. D. CaO + CO2 CaCO3. Cu 3. S oxi ha ca crom trong hp cht Cr2O3 l A. +2. B. +3. C. +6. D. +4. Cu 4. Cho phn ng ha hc: Fe + CuSO4 FeSO4 + Cu. Trong phn ng trn xy ra A. s oxi ha Fe v s oxi ha Cu. B. s kh Fe

2+ v s oxi ha Cu.

C. s kh Fe2+

v s kh Cu2+

. D. s oxi ha Fe v s kh Cu2+

. Cu 5. Cho phn ng: Na2SO3 + KMnO4 + NaHSO4 Na2SO4 + MnSO4 + K2SO4 + H2O. Tng h s ca cc cht (l nhng s nguyn, ti gin) trong phng trnh phn ng l A. 23. B. 27. C. 31. D. 47. Cu 6. 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 f) glucoz + AgNO3 (hoc Ag2O) trong dung dch NH3 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, c, d, e, h. B. a, b, d, e, f, g. C. a, b, c, d, e, g. D. a, b, d, e, f, h. Cu 7. 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. 8. B. 6. C. 5. D. 7. Cu 8. Trong phn ng t chy CuFeS2 to ra sn phm CuO, Fe2O3 v SO2 th mt phn t CuFeS2 s A. nhn 12 electron. B. nhn 13 electron. C. nhng 12 electron. D. nhng 13 electron. Cu 9. Cho cc phn ng sau:

4HCl + MnO2 MnCl2 + Cl2 + 2H2O. 2HCl + Fe FeCl2 + H2. 14HCl + K2Cr2O7 2KCl + 2CrCl3 + 3Cl2 + 7H2O. 6HCl + 2Al 2AlCl3 + 3H2. 16HCl + 2KMnO4 2KCl + 2MnCl2 + 5Cl2 + 8H2O.

S phn ng trong HCl th hin tnh oxi ha l A. 2. B. 4. C. 1. D. 3. Cu 10. Cho cc phn ng: Ca(OH)2 + Cl2 CaOCl2 + H2O 2H2S + SO2 3S + 2H2O 2NO2 + 2NaOH NaNO3 + NaNO2 + H2O . 4KClO3

ot KCl + 3KClO4

O3 O2 + O S phn ng oxi ho kh l A. 4. B. 3. C. 2. D. 5. Cu 11. Cho dy cc cht v ion: Cl2, F2, SO2, Na

+, Ca

2+, Fe

2+, Al

3+, Mn

2+, S

2-, Cl

-. S cht v ion trong dy u c

tnh oxi ho v tnh kh l A. 5. B. 6. C. 4. D. 3. Cu 12. Cho dy cc cht v ion: Zn, S, FeO, SO2, N2, HCl, Cu

2+, Cl

-. S cht v ion c c tnh oxi ha v tnh kh

l A. 6. B. 5. C. 4. D. 7. Cu 13. Thc hin cc th nghim sau:

(I) Sc kh SO2 vo dung dch KMnO4. (II) Sc kh SO2 vo dung dch H2S. (III) Sc hn hp kh NO2 v O2 vo nc. (IV) Cho MnO2 vo dung dch HCl c, nng. (V) Cho Fe2O3 vo dung dch H2SO4c, nng. (VI) Cho SiO2 vo dung dch HF.

S th nghim c phn ng oxi ho - kh xy ra l A. 6. B. 5. C. 3. D. 4. Cu 14. Cho dung dch X cha KMnO4 v H2SO4 (long) ln lt vo cc dung dch: FeCl2, FeSO4, CuSO4, MgSO4, H2S, HCl (c). S trng hp c xy ra phn ng oxi ho - kh l A. 3. B. 4. C. 6. D. 5. Cu 15. Cht no sau y ch th hin tnh kh trong cc phn ng oxi ha - kh ? A. H2S B. HNO3 C. Cl2 D. O3 Cu 16. Cho cc phn ng sau : 1. St t oxit + dung dch HNO3 4. St(TT) oxit + dung dch HNO3 2. St (TTT) oxit + dung dch HNO3 5. HCl + NaOH 3. Mg( kim loi ) + HCl 6. Cu + dung dch H2SO4 c nng Phn ng oxi ha kh l : A. 1,3,4,6 B. 1,3,4 C. 1,2,3,4 D. 3,4,5,6 Cu 17. Chn phng n ng, phn ng khng thuc loi oxi ha kh l: A. Phn ng thy phn B. Phn ng th C. Phn ng kt hp D. Phn ng phn hy Cu 18. Mi cht v ion trong dy sau va c tnh kh, va c tnh oxi ho:

A. SO2, S, Fe3+

. B. Fe2+

, Fe, Ca, KMnO4. C. SO2, Fe2+

, S, Cl2. D. SO2, S, Fe2+

, F2. Phn 2. CN BNG HO HC, TC PHN NG. Cu 19. Cho phng trnh ho hc ca phn ng tng hp amoniac

N2 (k) + 3H2 (k) ,ot xt

p 2NH3 (k)

Khi tng nng ca hiro ln 2 ln, tc phn ng thun A. tng ln 2 ln. B. tng ln 8 ln. C. tng ln 6 ln. D. gim i 2 ln. Cu 2.Cho cc cn bng ho hc:

(1)N2(k) + 3H2(k) 2NH3(k) (2)H2(k) + I2(k) 2HI (k)

(3)2SO2 (k) + O2 (k) 2SO3 (k) (4)2NO2 (k) N2O4 (k)

Khi thay i p sut nhng cn bng ha hc b chuyn dch l:



A. (1), (2), (4). B. (2), (3), (4). C. (1), (3), (4). D. (1), (2), (3). Cu 3. Hng s cn bng ca phn ng xc nh ch ph thuc vo A. p sut. B. nng . C. cht xc tc. D. nhit . Cu 4. Cho cc cn bng sau:

(1) 2SO2(k) + O2(k) 2SO3(k) (2) N2(k) + 3H2(k) 2NH3(k)

(3) CO2 (k) + H2 (k) CO (k) + H2O (k) (4) 2HI (k) H2 (k) + I2(k)

Khi thay i p sut, nhm gm cc cn bng ho hc u khng b chuyn dch l A. (2) v (4). B. (3) v (4). C. (1) v (3). D. (1) v (2). Cu 5. Cho cc cn bng sau:

(1) H2(k) + I2(k) 2HI (k) (2) 1/2H2(k) + 1/2I2(k) HI(k)

(3) HI(k) 1/2H2(k) + 1/2I2(k) (4) 2HI(k) H2(k) + I2(k)

(5) H2(k) + I2(r) 2HI(k)

nhit xc nh, nu KC ca cn bng (1) bng 64 th KC bng 0,125 l ca cn bng A. (3). B. (2). C. (4). D. (5).

Cu 6. Cho cn bng (trong bnh kn) sau: CO (k) + H2O (k) 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. (2), (3), (4). C. (1), (2), (3). D. (1), (2), (4). Cu 7. Cho cn bng ho hc: PCl5 (k) PCl3 (k) + Cl2 (k); >0 Cn bng chuyn dch theo chiu thun khi A. tng nhit ca h phn ng. B. thm Cl2 vo h phn ng. C. tng p sut ca h phn ng. D. thm PCl3 vo h phn ng. Cu 8. Cho phn ng: Br2 + HCOOH 2HBr + CO2. Nng ban u ca Br2 l a mol/lt, sau 50 giy nng Br2 cn li l 0,01 mol/lt. Tc trung bnh ca phn ng trn tnh theo Br2 l 4.10

-5 mol/(l.s). Gi tr ca a l

A. 0,014. B. 0,016. C. 0,018. D. 0,012.

Cu 9. Cho cn bng ha hc: N2(k) + 3H2(k) 2NH3(k). H < 0. Cn bng trn chuyn dch theo chiu thun khi A. tng nhit ca h phn ng. B. tng p sut ca h phn ng. C. gim p sut ca h phn ng. D. thm cht xc tc vo h phn ng.

Cu 10. Cho phn ng: H2 (k) + I2 (k) 2HI (k) nhit 430C, hng s cn bng KC ca phn ng trn bng 53,96. un nng mt bnh kn dung tch khng i 10 lt cha 4,0 gam H2 v 406,4 gam I2. Khi h phn ng t trng thi cn bng 430C, nng ca HI l A. 0,151M. B. 0,225M. C. 0,275M. D. 0,320M.

Cu 11. Cho cn bng ho hc: 2SO2(k) + O2(k) 2SO3(k); phn ng thun l phn ng to nhit.

Pht biu ng l: A. Cn bng chuyn dch theo chiu nghch khi gim nng SO3. B. Cn bng chuyn dch theo chiu thun khi gim p sut h phn ng. C. Cn bng chuyn dch theo chiu thun khi tng nhit . D. Cn bng chuyn dch theo chiu nghch khi gim nng O2.

Cu 12. 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 . C. thm cht xc tc Fe. D. thay i nng N2.

Cu 13. Cho cn bng sau trong bnh kn: 2NO2(k) N2O4(k).

(mu nu ) (khng mu) Bit khi h nhit ca bnh th mu nu nht dn. Phn ng thun c A. H > 0, phn ng ta nhit. B. H < 0, phn ng ta nhit. C. H > 0, phn ng thu nhit. D. H < 0, phn ng thu nhit. Cu 14. 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. 2,5.10-4 mol/(l.s). B. 1, 0.10-3 mol/(l.s). C. 5, 0.10-5 mol/(l.s). D. 5, 0.10-4 mol/(l.s).

Cu 15. Cho cn bng: 2SO2(k) + O2(k) 2SO3(k). Khi tng nhit th t khi ca hn hp kh so vi H2 gim



i. Pht biu ng khi ni v cn bng ny l: A. Phn ng thun to nhit, cn bng dch chuyn theo chiu nghch khi tng nhit . B. Phn ng thun thu nhit, cn bng dch chuyn theo chiu nghch khi tng nhit . C. Phn ng nghch to nhit, cn bng dch chuyn theo chiu thun khi tng nhit . D. Phn ng nghch thu nhit, cn bng dch chuyn theo chiu thun khi tng nhit .

Cu 16. Xt cn bng: N2O4(k) 2NO2(k) 25oC. Khi chuyn dch sang mt trng thi cn bng mi nu nng

ca N2O4tng ln 9 ln th nng ca NO2 A. gim 3 ln. B. tng 9 ln. C. tng 3 ln. D. tng 4,5 ln. Cu 17. Cho cc cn bng sau:

(I) 2HI (k) H2(k) + I2(k); (II) CaCO3(r) CaO (r) + CO2(k);

(III) FeO (r) + CO (k) Fe (r) + CO2 (k); (IV) 2SO2(k) + O2(k) 2SO3(k). Khi gim p sut ca h, s cn bng b chuyn dch theo chiu nghch l A. 3. B. 1. C. 4. D. 2.

Cu 18. Cho cn bng ho hc: H2(k) + I2(k) 2HI (k); H > 0. Cn bng khng b chuyn dch khi A. tng nhit ca h. B. tng nng H2. C. gim nng HI. D. gim p sut chung ca h. Cu 19. Cho 5,6 gam CO v 5,4 gam H2O vo mt bnh kn dung tch khng i 10 lt. Nung nng bnh mt thi gian 830

oC h t n trng thi cn bng:

CO (k) + H2O (k) CO2(k) + H2(k). (hng s cn bng KC = 1). Nng cn bng ca CO, H2O ln lt l A. 0,008M v 0,018M. B. 0,018M v 0,008M. C. 0,012M v 0,024M. D. 0,08M v 0,18M.

Cu 20. Cho cn bng ho hc sau: 2SO2 (k) + O2 (k) 2SO3 (k); H < 0. Cho cc bin php: (1) tng nhit , (2) tng p sut chung ca h phn ng, (3) h nhit , (4) dng thm cht xc tc V2O5, (5) gim nng SO3, (6) gim p sut chung ca h phn ng. Nhng bin php no lm cn bng trn chuyn dch theo chiu thun? A. (2), (3), (5). B. (2), (3), (4), (6). C. (1), (2), (4). D. (1), (2), (4), (5). Cu 21. Cho cc cn bng ho hc:

N2 (k) + 3H2 (k) 2NH3 (k) (1) H2 (k) + I2 (k) 2HI (k) (2)

2CO(k) + O2 (k) 2CO2 (k) (3) 2NO2 (k) N2O4 (k) (4) Khi thay i p sut nhng cn bng ho hc khng b chuyn dch l: A. (2) B. (1), (3), (4). C. (1), (2). D. (2), (3), (4)

Cu 22. Cho cn bng ha hc: aA + bB cC + dD 1050C s mol cht D l x mol cn 1800C s mol cht D l y mol. Bit x > y v (a + b) > (c + d). Cc cht trong cn bng u pha kh. Kt lun ng l

A. Phn ng thun thu nhit v lm gim p sut B. phn ng thun ta nhit v lm tng p sut C. phn ng thun thu nhit v lm tng p sut D. phn ng thun ta nhit v lm gim p sut Cu 23. Cho cn bng N2 (k) + 3H2(k) 2NH3(k) + Q. C th lm cn bng dung dch v pha to thm NH3 bng cch: A. H bt nhit xung B. Thm cht xc tc C. H bt p sut xung D. H bt nng N2 v H2 xung

Cu 24. Cho cn bng sau thc hin trong bnh kn: CO(k) + H2O(k)CO2(k) + H2(k) H



Cu 28. Hin nay, khi gi nhin liu t du m tng cao th vic s dng cc nhin liu thay th l rt cn thit. Trong cng nghip, iu ch kh than t, mt loi nhin liu kh, ngi ta thi hi nc qua than ang nng . Phn ng ho hc xy ra nh sau:

C (r) + H2O (k) CO(k) + H2 (k) H = 131kJ. iu khng nh no sau y l ng? A. Tng nng hiro lm cn bng chuyn sang chiu thun. B. Tng p sut chung ca h lm cn bng khng thay i. C. Dng cht xc tc lm cn bng chuyn sang chiu thun. D. Tng nhit ca h lm cn bng chuyn sang chiu thun.

Cu 29. Khi ha tan SO2 vo H2O c cn bng sau:

SO2 + HOH H2SO3 (1); H2SO3 H+ +HSO3

- (2);

HSO3- H+ + SO3

2- (3); nng SO2 thay i th no khi: Thm dung dch NaOH v thm dung

dch HCl; A. [SO2] u tng B. [SO2] u gim C. [SO2] khng thay i D. [SO2] gim; [SO2] tng Cu 30. Phn ng tng hp amoniac 2N2(k) + 3H2(k) 2NH3(k) c ng dng quan trng trong cng nghip ho cht. T amoniac, ngi ta sn xut phn m, axit nitric, thuc n Hi tc ca phn ng tng hp amoniac s tng bao nhiu ln nu tng nng hiro ln 2 ln khi nhit ca phn ng c gi nguyn ?

A. 8 ln. B. 4 ln. C. 16 ln. D. 2 ln. Cu 31. Phn ng tng hp amoniac 2N2(k) + 3H2(k) 2NH3(k) c ng dng quan trng trong cng nghip ho cht. T amoniac, ngi ta sn xut phn m, axit nitric, thuc n Hi tc ca phn ng tng hp amoniac s tng bao nhiu ln nu tng p sut ln 2 ln khi nhit ca phn ng c gi nguyn?

A. 8 ln. B. 36 ln. C. 32 ln. D. 16 ln. Cu 32. Trong bnh kn dung tch 1 lt, ngi ta cho vo 5,6 gam kh CO v 5,4 gam hi nc. Phn ng xy ra l:

CO + H2O CO2 + H2. 850oC hng s cn bng ca phn ng trn l KC = 1 )

]OH][CO[

]H][CO[K(

2

22= . S mol ca

CO v H2O khi t n cn bng ha hc ln lt l A. 0,2 v 0,3. B. 0,08 v 0,2. C. 0,12 v 0,12. D. 0,08 v 0,18.

Cu 33. Trong cc phn ng di y phn ng no s chuyn di theo chiu thun khi gim nhit hoc tng p sut. A. COCl2 (k) CO (k) + Cl2 (k);H = +113 KJ B. CO (k) + H2O (k) = CO2 (k) + H2 (k) H = - 41,8 kJ C. 2SO3 (k) 2SO2 (k) + O2 (k); H = +192 kJ D. 4HCl (k) + O2 (k) 2H2O (k) + 2Cl2 (k)H = -112,8 kJ

Cu 34. Xt cn bng: N2O4 (k) 2NO2 (k) 25oC. Khi chuyn dch sang mt trng thi cn bng mi nu nng

ca N2O4 tng ln 9 ln th nng ca NO2 A. tng 9 ln. B. tng 3 ln. C. tng 4,5 ln. D. gim 3 ln. Cu 35. Khng nh no sau y lun ng ? A. Khi tng nng cht phn ng, tc phn ng tng. B. Khi tng b mt cht phn ng, tc phn ng tng. C. Khi tng p sut, tc phn ng tng. D. Khi c mt cht xc tc, tc phn ng tng. Cu 36. Yu t khng nh hng n s chuyn dch cn bng : CaCO3 (r) CaO (r)+CO2(k) , H>0. A. nng CaCO3. B. p sut. C. nhit . D. nng CO2. Cu 37. Yu t no sau y khng nh hng n s chuyn dch cn bng : A. Nhit . B. Xc tc. C. p sut. D. Nng . Cu 38. Cho phn ng : 2NO + O2 2NO2.Khi tng nng cc cht ln 3 ln th tc phn ng thun v tc phn nghch tng ln bao nhiu ln. A. 9 ln v 3 ln. B. 36 ln v 12 ln. C. 27 ln v 9 ln. D. 18 ln v 6 ln. Cu 39. Cn bng ho hc l 1 cn bng ng v : A. trng thi cn bng phn ng thun vn xy ra. B. trng thi cn bng vn xy ra phn ng. C. trng thi cn bng phn ng khng dng li m phn ng thun v nghch vn xy ra, nhng vi tc bng nhau. D. trng thi cn bng phn ng nghch vn xy ra. Cu 40. Tc phn ng A (k) + B(k) C (k) tng ln bao nhiu ln, nu gi nng cc cht phn ng khng i khi tng nhit phn ng t 398oC ln 448oC, bit tc phn ng tng ln 2 ln khi nhit tng ln 10oC. A. 32 ln. B. 64 ln. C. 16 ln. D. 10 ln. Cu 41. tng tc phn ng thun ca p : 2NO + O2 2NO2. Ta cn phi :



A. Gim nng NO. B. Tng p sut. C. Tng nng ca NO2. D. Gim nng ca O2. Cu 42. Cho cn bng : 2NO2 N2O4 , H < 0. Nhng bnh ng hn hp gm 2 kh trn vo nc th : A. mu nu nht dn. B. hn hp c mu khc. C. mu nu m dn. D. hn hp gi nguyn mu khng i. Cu 43. Chn pht biu ng. A. Cht xc tc l cht lm tng tc phn ng, nhng cn li sau khi phn ng kt thc. B. Cht xc tc l cht lm thay i tc phn ng. C. Cht xc tc s khng cn khi phn ng kt thc. D. Cht xc tc l cht lm tng hoc lm gim tc phn ng. Cu 44. Khi ho tan SO2 v nc ta c cn bng : SO2 + H2O HSO3

- + H+. Cn bng chuyn dch theo chiu thun khi. A. thm Br2. B. thm NaOH. C. thm H2SO4 long. D. thm HCl. Cu 45. Cho phn ng : A (k) + B(k) C (k). Khi tng p sut ln 2 ln, tc phn ng tng: A. 4 ln. B. 16ln. C. 2 ln. D. 8 ln. Cu 45. Cho phn ng : H2 + I2 (hi) 2 HI (k). S chuyn dch cn bng phn ng ph thuc vo : A. th tch bnh phn ng. B. nhit ca phn ng. C. p sut ca h. D. hm lng cht xc tc. Cu 47. tng tc ca phn ng nung vi ngi ta dng bin php. A. Cho mn nh bt vo l. B. Tng nhit phn ng (nung tocao). C. xy l kn trnh gi. D. Cho nhiu tng to vo l. Cu 48. Xt phn ng : 2SO2 (k) + O2 (k) 2 SO3 (k) , H



Cu 59. 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

oC, H2 chim 50% th tch hn hp thu c.

Hng s cn bng KC toC ca phn ng c gi tr l

A. 3,125. B. 0,500. C. 0,609. D. 2,500. Cu 60. Khng nh no sau y khng ng ? A. Cc cht t rn (than, ci) c kch thc nh s d chy hn. B. Nu thc phm trong ni p sut nhanh chn hn so vi khi nu nhit thng. C. Nu thc phm trn ni cao ( p sut thp ) thc phm nhanh chn hn. D. Nht ca ngn la axetilen chy trong oxi cao hn nhiu so vi chy trong khng kh.

Chuyn 3: BI TP LIN QUAN N DUNG DCH AXIT HCl, HNO3, H2SO4

Phn 1. TNH AXIT CA CC DUNG DCH Cu 1. Cho 0,02 mol Na2CO3 tc dng vi lng d dung dch HCl th th tch kh CO2 thot ra ( ktc) l A. 0,672 lt. B. 0,336 lt. C. 0,224 lt. D. 0,448 lt. Cu 2. Cho 10 gam hn hp gm Fe v Cu tc dng vi dung dch H2SO4 long (d). Sau phn ng thu c 2,24 lt kh hiro ( ktc), dung dch X v m gam cht rn khng tan. Gi tr ca m l (Cho H = 1, Fe = 56, Cu = 64) A. 5,6 gam. B. 6,4 gam. C. 4,4 gam. D. 3,4 gam. Cu 3. Cho 15 gam hn hp bt kim loi Zn v Cu vo dung dch HCl (d). Sau khi phn ng xy ra hon ton, thu c 4,48 lt kh H2 (ktc) v m gam kim loi khng tan. Gi tr ca m l A. 8,5. B. 2,2. C. 2,0. D. 6,4. Cu 4. Cho 5,6 gam Fe tc dng vi dung dch HCl (d) thu c th tch kh H2 ( ktc) l (Cho H = 1, Fe = 56) A. 6,72 lt. B. 1,12 lt. C. 2,24 lt. D. 4,48 lt. Cu 5. Cho 8,9 gam hn hp bt Mg v Zn tc dng vi dung dch H2SO4 long (d), thu c 0,2 mol kh H2. Khi lng ca Mg v Zn trong 8,9 gam hn hp trn ln lt l A. 1,2 gam v 7,7 gam. B. 1,8 gam v 7,1 gam. C. 2,4 gam v 6,5 gam. D. 3,6 gam v 5,3 gam. Cu 6. Ho tan 5,4 gam Al bng mt lng dung dch H2SO4 long (d). Sau phn ng thu c dung dch X v V lt kh hiro ( ktc). Gi tr ca V l (Cho H = 1, Al = 27) A. 6,72 lt. B. 4,48 lt. C. 2,24 lt. D. 3,36 lt. Cu 7. Ha tan 6,5 gam Zn trong dung dch axit HCl d, sau phn ng c cn dung dch th s gam mui khan thu c l (Cho H = 1, Zn = 65, Cl = 35,5) A. 14,96 gam. B. 13,6 gam. C. 20,7 gam. D. 27,2 gam. Cu 8. Ho tan m gam Fe trong dung dch HCl d, sau khi phn ng kt thc thu c 4,48 lt kh H2 ( ktc). Gi tr ca m l (Cho Fe = 56, H = 1, Cl = 35,5) A. 5,6. B. 11,2. C. 1,4. D. 2,8. Cu 9. Khi lung K2Cr2O7 cn dng oxi ho ht 0,6 mol FeSO4 trong dung dch c H2SO4 long lm mi trng l (Cho O = 16, K = 39, Cr = 52) A. 24,9 gam. B. 29,4 gam C. 59,2 gam. D. 29,6 gam Cu 10. Ha tan hon ton 3,22 gam hn hp X gm Fe, Mg v Zn bng mt lng va dung dch H2SO4 long, thu c 1,344 lt hiro ( ktc) v dung dch cha m gam mui. Gi tr ca m l (Cho H = 1; O = 16; Mg = 24; S = 32; Fe = 56; Zn = 65) A. 8,98. B. 7,25. C. 10,27. D. 9,52. Cu 11. Ho tan hon ton hn hp X gm Fe v Mg bng mt lng va dung dch HCl 20%, thu c dung dch Y. Nng ca FeCl2 trong dung dch Y l 15,76%. Nng phn trm ca MgCl2 trong dung dch Y l (Cho H = 1; Mg = 24; Cl = 35,5; Fe = 56) A. 15,76%. B. 24,24%. C. 28,21%. D. 11,79%. Cu 12. Cho mt mu hp kim Na-Ba tc dng vi nc (d), thu c dung dch X v 3,36 lt H2 ( ktc). Th tch dung dch axit H2SO4 2M cn dng trung ho dung dch X l A. 60ml. B. 150ml. C. 75ml. D. 30ml. Cu 13. X l kim loi thuc nhm IIA. Cho 1,7 gam hn hp gm kim loi X v Zn tc dng vi lng d dung dch HCl, sinh ra 0,672 lt kh H2( ktc). Mt khc, khi cho 1,9 gam X tc dng vi lng d dung dch H2SO4 long, th th tch kh hiro sinh ra cha n 1,12 lt ( ktc). Kim loi X l A. Ca. B. Mg. C. Ba. D. Sr. Cu 14. Cho 13,5 gam hn hp cc kim loi Al, Cr, Fe tc dng vi lng d dung dch H2SO4 long nng (trong iu kin khng c khng kh), thu c dung dch X v 7,84 lt kh H2 ( ktc).C cn dung dch X (trong iu kin khng c khng kh) c m gam mui khan. Gi tr ca m l A. 48,8. B. 42,6. C. 47,1. D. 45,5.



Cu 15. Ho tan ht 7,74 gam hn hp bt Mg, Al bng 500 ml dung dch hn hp HCl 1M v H2SO4 0,28M thu c dung dch X v 8,736 lt kh H2 ( ktc). C cn dung dch X thu c lng mui khan l A. 25,95 gam. B. 103,85 gam. C. 77,86 gam. D. 38,93 gam. Cu 16. 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. 3,08. B. 4,48. C. 3,36. D. 2,80. Cu 17. Cho m gam hn hp X gm FeO, Fe2O3, Fe3O4 vo mt lng va dung dch HCl 2M, thu c dung dch Y c t l s mol Fe

2+ v Fe

3+ l 1 : 2. Chia Y thnh hai phn bng nhau. C cn phn mt thu c m1 gam

mui khan. Sc kh clo (d) vo phn hai, c cn dung dch sau phn ng thu c m2 gam mui khan. Bit m2 - m1 = 0,71. Th tch dung dch HCl dng l A. 240 ml. B. 80 ml. C. 320 ml. D. 160 ml. Cu 18. Nung nng 16,8 gam hn hp gm Au, Ag, Cu, Fe, Zn vi mt lng d kh O2, n khi cc phn ng xy ra hon ton, thu c 23,2 gam cht rn X. Th tch dung dch HCl 2M va phn ng vi cht rn X l A. 600 ml. B. 400 ml. C. 800 ml. D. 200 ml. Cu 19. Cho 0,015 mol mt loi hp cht oleum vo nc thu c 200 ml dung dch X. trung ho 100 ml dung dch X cn dng 200 ml dung dch NaOH 0,15M. Phn trm v khi lng ca nguyn t lu hunh trong oleum trn l A. 23,97%. B. 32,65%. C. 37,86%. D. 35,95%. Cu 20. Cho 9,125 gam mui hirocacbonat phn ng ht vi dung dch H2SO4 (d), thu c dung dch cha 7,5 gam mui sunfat trung ho. Cng thc ca mui hirocacbonat l A. Mg(HCO3)2. B. Ca(HCO3)2. C. Ba(HCO3)2. D. NaHCO3. Cu 21. Cho 3,16 gam KMnO4 tc dng vi dung dch HCl c (d), sau khi phn ng xy ra hon ton th s mol HCl b oxi ha l A. 0,16. B. 0,05. C. 0,02. D. 0,10. Cu 22. ho tan hon ton 6,4 gam hn hp gm kim loi R (ch c ha tr II) v oxit ca n cn va 400 ml dung dch HCl 1M. Kim loi R l A. Ba. B. Ca. C. Be. D. Mg. Cu 23. 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 (kc). 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 24. Cho 1,04 gam hn hp 2 kim loi tan hon ton trong H2SO4 long d thy c 0,672 lt kh thot ra iu kin tiu chun. Khi lng hn hp mui sunfat khan thu c l: A. 3,92gam. B. 1,68gam. C. 0,46gam. D. 2,08gam. Cu 25.Cho 1,53 gam hn hp Mg, Zn, Cu vo dung dch HCl d thot ra 448 ml kh (kc). C cn hn hp sau phn ng ri nung khan trong chn khng thu c mt cht rn c kl l: A. 2,95 g B. 3,95 g C. 2,24 g D. 1,83 g Cu 25. Cho 11,1 gam hn hp hai mui sunft trung ho ca 2 kim loi kim hai chu k lin tip tan hon ton trong dung dch HCl d thu c 2,24 lt kh SO2(kc). Hai kim loi l: A. Li,Na. B. Na,K. C. K,Cs. D. Na, Cs. Cu 26. Cho 2O gam hn hp kim loi M v Al vo dung dch H2SO4 v HCl ( s mol HCl gp 3 ln s mol H2SO4 ) th thu c 11,2 lt H2 (kc) v vn cn d 3,4 gam kim loi . Lc ly phn dung dch ri em c cn thu c m gam mui khan . Tnh m ?( S = 32 ; O = 16 , Cl = 35,5) A. 57,1 gam B. 75,1 gam C. 51,7 gam D. 71,5 gam Cu 27. Cho 40g hn hp gm Au, Ag, Cu, Fe, Zn tc dng vi O2 d nung nng thu c 46,4g hn hp cht rn X. Th tch dung dch HCl 2M ti thiu phn ng va vi X l A. 0,4 L B. 0,5 L C. 0,35 L D. 0,8 L Cu 28. Cho 6,94 gam hn hp FexOy v Al ha tan trong 100 ml dung dch H2SO4 1,8M, sinh ra 0,672 lt H2 (kc). Bit lng axit ly d 20% so vi lng cn thit phn ng. FexOy l: A. FeO B. Fe3O4 C. Fe2O3 D. Khng tm c Cu 29. Cho 8,00 gam canxi tan hon ton trong 200 ml dung dch hn hp HCl 2M v H2SO4 0,75M thu c kh H2 v dung dch X. C cn dung dch X thu c m gam mui khan. Gi tr ca m l: A. 22,2 B. 25,95 C. 22,2 m 25,95 D. 22,2 m 27,2 Cu 30. kh hon ton 6,4 gam mt oxt kim loi cn 0,12 mol kh H2. Mt khc ly lng kim loi to thnh cho tan hon ton trong dung dch H2SO4 long th thu c 0,08 mol H2. Cng thc oxit kim loi l: A. CuO. B. Al2O3. C. Fe3O4. D. Fe2O3. Cu 31. em oxi ha hon ton 11,2 lt SO2 (kc) ri ha tan ton b sn phm vo 21O g dung dch H2SO4 1O% thu c dung dch A . Tnh nng % ca dung dch A ( cho S =32 , O = 16 , H = 1 ) .



A. 32% B. 28% C. 24% D. 16% Cu 32. Cho t t dung dch cha a mol HCl vo dung dch cha b mol Na2CO3 ng thi khuy u, thu c V lt kh ( ktc) v dung dch X. Khi cho d nc vi trong vo dung dch X thy c xut hin kt ta. Biu thc lin h gia V vi a, b l: A. V = 11,2(a + b). B. V = 11,2(a - b). C. V = 22,4(a + b). D. V = 22,4(a - b). Cu 33. Ho tan 5,6 gam Fe bng dung dch H2SO4 long (d), thu c dung dch X. Dung dch X phn ng va vi V ml dung dch KMnO4 0,5M. Gi tr ca V l (cho Fe = 56) A. 20. B. 40. C. 60. D. 80. Cu 34. Ho tan hon ton 2,81 gam hn hp gm Fe2O3, MgO, ZnO trong 500 ml axit H2SO4 0,1M (va ). Sau phn ng, hn hp mui sunfat khan thu c khi c cn dung dch c khi lng l (cho H = 1, O = 16, Mg = 24, S = 32, Fe = 56, Zn = 65) A. 4,81 gam. B. 6,81 gam. C. 3,81 gam. D. 5,81 gam. Cu 35. Cho 1,67 gam hn hp gm hai kim loi 2 chu k lin tip thuc nhm IIA (phn nhm chnh nhm II) tc dng ht vi dung dch HCl (d), thot ra 0,672 lt kh H2 ( ktc). Hai kim loi l (cho Be = 9, Mg = 24, Ca = 40, Sr = 87, Ba = 137) A. Mg v Ca. B. Sr v Ba. C. Ca v Sr. D. Be v Mg. Cu 36. Cho 2,13 gam hn hp X gm ba kim loi Mg, Cu v Al dng bt tc dng hon ton vi oxi thu c hn hp Y gm cc oxit c khi lng 3,33 gam. Th tch dung dch HCl 2M va phn ng ht vi Y l A. 50 ml. B. 75 ml. C. 57 ml. D. 90 ml. Cu 37. ho tan hon ton 2,32 gam hn hp gm FeO, Fe3O4 v Fe2O3 (trong s mol FeO bng s mol Fe2O3), cn dng va V lt dung dch HCl 1M. Gi tr ca V l A. 0,08. B. 0,18. C. 0,23. D. 0,16. Cu 38. oxi ha hon ton 0,01 mol CrCl3 thnh K2CrO4 bng Cl2 khi c mt KOH, lng ti thiu Cl2 v KOH tng ng l A. 0,03 mol v 0,08 mol. B. 0,03 mol v 0,04 mol. C. 0,015 mol v 0,08 mol. D. 0,015 mol v 0,04 mol. Cu 39. Cho 9,12 gam hn hp gm FeO, Fe2O3, Fe3O4 tc dng vi dung dch HCl (d). Sau khi cc phn ng xy ra hon ton, c dung dch Y; c cn Y thu c 7,62 gam FeCl2 v m gam FeCl3. Gi tr ca m l A. 7,80. B. 8,75. C. 6,50. D. 9,75. Cu 40. Cho 1,9 gam hn hp mui cacbonat v hirocacbonat ca kim loi kim M tc dng ht vi dung dch HCl (d), sinh ra 0,448 lt kh ( ktc). Kim loi M l A. Li. B. K. C. Na. D. R Cu 41. 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. 4,48 lt. B. 3,92 lt. C. 1,68 lt. D. 2,80 lt. Cu 42. 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. 97,80 gam. B. 88,20 gam. C. 101,68 gam. D. 101,48 gam. Cu 43. Cho 100 ml dung dch KOH 1,5M vo 200 ml dung dch H3PO40,5M, thu c dung dch X. C cn dung dch X, thu c hn hp gm cc cht l A. K3PO4v KOH. B. KH2PO4 v K2HPO4. C. KH2PO4v H3PO4. D. KH2PO4 v K3PO4. Cu 44. Ho tan m gam hn hp gm Al, Fe vo dung dch H2SO4 long (d). Sau khi cc phn ng xy ra hon ton, thu c dung dch X. Cho dung dch Ba(OH)2 (d) vo dung dch X, thu c kt ta Y. Nung Y trong khng kh n khi lng khng i, thu c cht rn Z l A. hn hp gm BaSO4 v FeO. B. hn hp gm Al2O3 v Fe2O3. C. Fe2O3. D. hn hp gm BaSO4 v Fe2O3. Cu 45. Nh t t tng git n ht 30 ml dung dch HCl 1M vo 100 ml dung dch cha Na2CO3 0,2M v NaHCO3 0,2M, sau phn ng thu c s mol CO2l A. 0,015. B. 0,030. C. 0,010. D. 0,020. Cu 46. Cho 7,1 gam hn hp gm mt kim loi kim X v mt kim loi kim th Y tc dng ht vi lng d dung dch HCl long, thu c 5,6 lt kh (ktc). Kim loi X, Y l A. natri v magie. B. kali v canxi. C. kali v bari. D. liti v beri. Cu 47. Cho m gam hn hp bt X gm ba kim loi Zn, Cr, Sn c s mol bng nhau tc dng ht vi lng d dung dch HCl long, nng thu c dung dch Y v kh H2. C cn dung dch Y thu c 8,98 gam mui khan. Nu cho m gam hn hp X tc dng hon ton vi O2 (d) to hn hp 3 oxit th th tch kh O2 (ktc) phn ng l A. 1,008 lt. B. 1,344 lt. C. 2,016 lt. D. 0,672 lt. Cu 48. Ha tan hon ton 2,45 gam hn hp X gm hai kim loi kim th vo 200 ml dung dch HCl 1,25M, thu c dung dch Y cha cc cht tan c nng mol bng nhau. Hai kim loi trong X l A. Mg v Sr. B. Mg v Ca. C. Be v Ca. D. Be v Mg.



Cu 49. Cho hn hp X gm Fe2O3, ZnO v Cu tc dng vi dung dch HCl (d) thu c dung dch Y v phn khng tan Z. Cho Y tc dng vi dung dch NaOH (long, d) thu c kt ta A. Fe(OH)2 v Cu(OH)2. B. Fe(OH)2, Cu(OH)2 v Zn(OH)2. C. Fe(OH)3. D. Fe(OH)3 v Zn(OH)2. Cu 50. Ho tan hn hp bt gm m gam Cu v 4,64 gam Fe3O4 vo dung dch H2SO4 (long, rt d), sau khi cc phn ng kt thc ch thu c dung dch X. Dung dch X lm mt mu va 100ml dung dch KMnO4 0,1M. Gi tr ca m l A. 1,24. B. 3,2. C. 0,96. D. 0,64. Cu 51. t m gam bt st trong kh oxi thu c 7,36 gam cht rn X gm Fe ;Fe2O3;FeO; Fe3O4. ha tan hon ton hn hp X cn va ht 12O ml dung dch H2SO4 1M. to thnh O,224 lt kh H2 ktc. Tnh m: ( Fe = 56 , S = 32 , O = 16 , H = 1 ) A. 5,6 gam B. 1O,O8 gam C. 7,6 gam D. 6,7 gam Cu 52. Ho tan 36 gam hn hp ng v oxit st t ( dng bt) theo t l mol 2 : 1 bng dung dch HCl d, phn ng xong thu c dung dch X v cht rn Y. ( Fe = 56, Cu = 64, O = 16 ). Khi lng cht rn Y bng A. 12,8 gam. B. 6,4 gam. C. 23,2 gam. D. 16,0 gam. Cu 53. Ha tan ht 26,43 gam hn hp bt gm Mg, Al, Al2O3 v MgO bng 795 ml dung dch hn hp gm HCl 0,5M v H2SO4 0,75M (va ). Sau phn ng thu c dung dch X v 4,368 lt kh H2 ( ktc). C cn dung dch X thu c khi lng mui khan l A. 95,92 gam B. 88,18 gam C. 86,58 gam D. 100,52 gam Cu 54. Ha tan hon ton 3,26 gam hn hp gm Na2O, MgO, Al2O3 trong 200 ml HNO3 aM (va ) sau phn ng, thu c 4,34 gam hn hp mui nitrat. Gi tr ca a l : A. 0,1M B. 0,2M C. 0,3M D. 0,25M Cu 55. Ha tan hon ton 3,6 gam hn hp X gm 2 mui cacbonat trung ha (ca 2 kim loi A, B k tip nhau trong phn nhm chnh nhm II) bng dd HCl, kh sinh ra c hp th hon ton bi 3 lt dd Ca(OH)

2 0,015M th

thu c 4 gam kt ta. Hai kim loi A, B l: A. Be, Mg B. Mg, Ca C. Be, Mg hoc Mg, Ca D. Mg, Ca hoc Sr, Ba Cu 56. Ha tan hon ton 4 gam hn hp MCO3 v M'CO3 bng dung dch HCl d thy thot ra V lt kh iu kin tiu chun. Dung dch thu c em c cn c 5,1 gam mui khan. Gi tr ca V l: A. 1,12 lt B. 1,68 lt C. 2,24 lt D. 3,36 lt Cu 57. Ho tan hon ton 9,0 gam hn hp X gm bt Mg v bt Al bng dung dch H2SO4 long, d thu c kh A v dung dch B. Thm t t dung dch NaOH vo B sao cho kt ta t ti lng ln nht th dng li. Lc kt ta, em nung trong khng kh n khi lng khng i thu c 16,2 gam cht rn. Th tch kh A thu c iu kin tiu chun l: A. 11,2 lt B. 10,08 lt C. 8,4 lt D. 5,04 lt Cu 58. Ho tan hon ton a gam hn hp X gm Fe v Fe2O3 trong dung dch HCl thu c 2,24 lt kh H2 (kc) v dung dch B. Cho dung dch B tc dng dung dch NaOH d, lc ly kt ta, nung trong khng kh n khi lng khng i thu c 24 gam cht rn. Gi tr ca a l: A. 13,6 gam B. 17,6 gam C. 21,6 gam D. 29,6 gam Cu 59. Hn hp X gm Cu v Fe3O4 nng 9 gam. Cho X vo dung dch HCl d thy cn 1,6 gam Cu khng tan. Khi lng Fe3O4 trong X l A. 7,4 g B. 5,8 g C. 2,32g D. 3,48 g Cu 60. Mt hn hp X gm M v oxit MO ca kim loi y. X tan va trong 0,2 lt dung dch H2SO4 0,5M cho ra 1,12 lt H2 (kc). Bit khi lng ca M trong hn hp X bng 0,6 ln khi lng ca MO trong hn hp y. Kim loi M, khi lng M v MO trong X l: A. Mg; 1,2 gam Mg v 2 gam MgO B. Ca; 2 gam Ca v 2,8 gam CaO C. Ba; 6,85 gam Ba v 7,65 gam BaO D. Cu; 3,2 gam Cu v 4 gam CuO Cu 61. Ngm mt thanh kim loi M c khi lng 50 gam trong dung dch HCl. Sau phn ng thu c 336 ml H2 (kc) v thy khi lng l kim loi gim 1,68% so vi ban u. Kim loi M l: A. Mg B. Al C. Si D. Fe Cu 62. Oxi ha hon ton p gam Kim loi X th thu 1,25p gam oxit . Ha tan mui cacbonat ca kim loi Y bng mt lng va dung dch H2SO4 9,8% th thu c dung dch mui sunfat c nng 14,18% . Hi X,Y l kim loi g ?( Cu = 64 , Zn = 65 , Mg = 24 , Fe = 56 ) A. Cu v Fe B. Al v Fe C. Cu v Zn D. Zn v Mg Phn 2. TNH OXIHO CA CC DUNG DCH AXIT HNO3, H2SO4. Cu 63. Ho tan 22,4 gam Fe bng dung dch HNO3 long (d), sinh ra V lt kh NO (sn phm kh duy nht, ktc). Gi tr ca V l A. 8,96. B. 4,48. C. 2,24. D. 3,36. Cu 64. Cho hn hp X gm Mg v Fe vo dung dch axit H2SO4c, nng n khi cc phn ng xy ra hon ton, thu c dung dch Y v mt phn Fe khng tan. Cht tan c trong dung dch Y l A. MgSO4. B. MgSO4 v FeSO4. C. MgSO4 v Fe2(SO4)3. D. MgSO4, Fe2(SO4)3 v FeSO4.



Cu 65. Ho tan hon ton 8,862 gam hn hp gm Al v Mg vo dung dch HNO3 long, thu c dung dch X v 3,136 lt ( ktc) hn hp Y gm hai kh khng mu, trong c mt kh ha nu trong khng kh. Khi lng ca Y l 5,18 gam. Cho dung dch NaOH (d) vo X v un nng, khng c kh mi khai thot ra. Phn trm khi lng ca Al trong hn hp ban u l A. 10,52%. B. 19,53%. C. 12,80%. D. 15,25%. Cu 66. Cho a gam Fe vo 100 ml dung dch hn hp gm HNO3 0,8M v Cu(NO3)2 1M. Sau khi cc phn ng xy ra hon ton, thu c 0,92a gam hn hp kim loi v kh NO (sn phm kh duy nht ca N+5 ). Gi tr ca a l A. 11,0. B. 8,4. C. 11,2. D. 5,6. Cu 67. Cho hn hp gm 6,72 gam Mg v 0,8 gam MgO tc dng ht vi lng d dung dch HNO3. Sau khi cc phn ng xy ra hon ton, thu c 0,896 lt mt kh X (ktc) v dung dch Y. Lm bay hi dung dch Y thu c 46 gam mui khan. Kh X l A. N2O. B. NO. C. NO2. D. N2. Cu 68. Ho tan hon ton 13,00 gam Zn trong dung dch HNO3 long, d thu c dung dch X v 0,448 lt kh N2 (ktc). Khi lng mui trong dung dch X l A. 37,80 gam. B. 28,35 gam. C. 39,80 gam. D. 18,90 gam. Cu 69. Cho 0,01 mol mt trong cc cht: Fe, Fe3O4, FeS, Cu, S, FeO, Ag tc dng vi dung dch H2SO4 c, nng d thy thot ra V lit kh SO2 (sn phm kh duy nht ktc). Nu V = 0,112 th s cht ph hp l A. 4 B. 6 C. 5 D. 3 Cu 70. Cho 1,28g Cu vo 100 ml dung dch gm NaNO3 0,15M v H2SO4 0,2M, sau khi phn ng xy ra hon ton thu c kh NO duy nht c th tch (kc) l A. 0,3 lit. B. 0,336 lit C. 0,112 lit D. 0,224 lit Cu 71. Cho 1,35g hn hp gm Cu, Mg, Al tc dng ht vi dung dch HNO

3 thu c hn hp kh gm 0,01

mol NO v 0,04 mol NO2. Khi lng mui to thnh trong dung dch:

A. 5,69 gam B. 5 gam C. 6 gam D. 5,5 gam Cu 72. Cho 1,92 gam Cu v 100 ml dd cha ng thi KNO

3 0,16 M v H

2SO

4 0,4 M, sinh ra kh NO v dd A.

Th tch (lt) dd NaOH 0,5 M ti thiu kt ta ton b ion Cu2+ trong dd A l: A. 0,12 B. 0,128 C. 0,112 D. 0,096 Cu 73. Cho 13,5 g nhm tc dng va vi 2,2 lt dd HNO3 thu c hn hp kh NO v NO2 c t khi so vi H2 l 19,2. Nng mol ca dd axit ban u l

A. 0,68 M B. 0,05 M C. 0,86 M D. 0,9 M Cu 74. Cho 18,5 gam hn hp gm Fe v Fe3O4 tc dng vi 200 ml HNO3 long, un nng. Sau khi phn ng thu c 2,24 lt NO duy nht (kc), dung dch D v cn li 1,46 gam kim loi. Nng ca dung dch HNO3 l: A. 5,1M B. 3,5M C. 3,2M D. 2,6M Cu 75. Cho 2,0 gam Fe v 3,0 gam Cu vo dung dch HNO3 long thu c 0,448 lt kh NO duy nht v dung dch X. Khi lng mui khan thu c sau khi c cn dung dch X l: A. 5,4 gam. B. 6,24 gam C. 17,46 gam D. kt qu khc Cu 76. Cho 2,7 gam Al tc dng va vi dung dch cha NaNO3 v NaOH thu c V lt kh (kc). Gi tr ca V l: A. 0,84 lt B. 1,68 lt C. 11,2 lt D. 22,4 lt Cu 77. Cho 20 gam Fe tc dng vi HNO3 , thu c V lt kh NO duy nht (kc) v 3,2 gam cht rn. Gi tr ca V l: A. 0,896 lt B. 2,24 lt C. 4,48 lt D. 6,72 lt Cu 78. Cho 5,8 gam mui FeCO3 tc dng vi dung dch HNO3 va , thu c hn hp kh cha CO2, NO v dung dch X. Cho dung dch HCl d vo dung dch X c dung dch Y, dung dch Y ny ha tan c ti a m gam Cu, sinh ra sn phm kh NO duy nht. Gi tr ca m l: A. 9,6 gam B. 11,2 gam C. 14,4 gam D. 16 gam Cu 79. Cho 8,4 gam Fe tc dng vi dung dch HNO3 long. Sau khi phn ng xy ra hon ton thu c kh NO, dung dch A v cn li 2,8 gam cht rn khng tan. C cn dung dch A thu c m gam mui khan. Gi tr ca m l: A. 11,8 gam B. 18 gam C. 21,1 gam D. 24,2 gam Cu 80. Cho a mol Cu kim loi tan hon ton trong 120ml dung dch X gm HNO3 1M v H2SO4 0,5M (long) thu c V lt kh NO duy nht (kc). Tnh V? A. 14,933a lt. B. 12,32a lt. C. 18,02a lt. D. Kt qu khc. Cu 81. Cho hn hp gm 0,15 mol CuFeS2 v 0,09 mol Cu2FeS2 tc dng vi dung dch HNO3 d thu c dung dch X v hn hp kh Y gm NO v NO2. Thm BaCl2 d vo dung dch X thu c m gam kt ta. Mt khc, nu thm Ba(OH)2 d vo dung dch X, ly kt ta nung trong khng kh n khi lng khng i thu c a gam cht rn. Gi tr ca m v a l:



A. 112,84g v 167,44g B. 112,84g v 157,44g C. 111,84g v 157,44g D. 111,84g v 167,44g Cu 82. Cho m gam Al tc dng hon ton vi NaOH d sinh ra a mol kh H

2, cn nu cho cng lng Al ny vo

dd HNO3 long d th thu c b mol kh N

2 (sn phm kh duy nht). Quan h gia a v b l:

A. a = 2b B. a = 5b C. a = 2,5b D. a = B Cu 83. Cho m gam Fe tc dng hon ton vi dung dch cha 0,42 mol H2SO4 c nng, thu c dung dch ch cha 28,56 gam mui v kh SO2. Gi tr m l: A. 8,4 gam B. 7,84 gam C. 11,2 gam D. 23,52 gam Cu 84. Cho m gam hn hp bt X gm ba kim loi Zn, Cr, Sn c s mol bng nhau tc dng ht vi lng d dung dch HCl long, nng thu c dung dch Y v kh H2. C cn dung dch Y thu c 8,98 gam mui khan. Nu cho m gam hn hp X tc dng hon ton vi O2 (d) to hn hp 3 oxit th th tch kh O2 (kc) phn ng l A. 2,016lt. B.1,00lt. C. 0,672lt. D.1,344lt. Cu 85. Cho m gam hn hp Cu, Fe, Al tc dng hon ton vi dung dch HNO

3 long d thu c (m+31)g mui

nitrat. Nu cng cho m gam hn hp kim loi trn tc dng vi oxi c cc oxit CuO, Fe2O

3, Al

2O

3 th khi lng

oxit l: A. (m+48)gam B. (m+32)gam C. (m+4)gam D. (m+16)gam Cu 86. C mt loi qung pirit cha 96% FeS2. Nu mi ngy nh my sn xut 100 tn H2SO4 98% v hiu sut iu ch H2SO4 l 90% th lng qung pirit cn dng l : A. 69,44 tn B. 68,44 tn C. 67,44 tn D. 70,44 tn. Cu 87. 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. 224ml. B. 448ml. C. 336ml. D. 112ml. Cu 88. 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 89. Ha tan hon ton 12 gam hn hp Fe, Cu (t l mol 1:1) bng axit HNO3, thu c V lt ( ktc) hn hp kh X (gm NO v NO2) v dung dch Y (ch cha hai mui v axit d). T khi ca X i vi H2 bng 19. Gi tr ca V l (cho H = 1, N = 14, O = 16, Fe = 56, Cu = 64) A. 5,60. B. 4,48. C. 3,36. D. 2,24. Cu 90. 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. 0,04. B. 0,12. C. 0,06. D. 0,075. Cu 91. Nung m gam bt st trong oxi, thu c 3 gam hn hp cht rn X. Ha tan ht hn hp X trong dung dch HNO3 (d), thot ra 0,56 lt ( ktc) NO (l sn phm kh duy nht). Gi tr ca m l (cho O = 16, Fe = 56) A. 2,32. B. 2,52. C. 2,22. D. 2,62. Cu 92. 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 (cho Cu = 64) A. V2 = V1. B. V2 = 1,5V1. C. V2 = 2,5V1. D. V2 = 2V1. Cu 93. Cho 6,72 gam Fe vo dung dch cha 0,3 mol H2SO4c, nng (gi thit SO2 l sn phm kh duy nht). Sau khi phn ng xy ra hon ton, thu c (cho Fe = 56) A. 0,05 mol Fe2(SO4)3 v 0,02 mol Fe d. B. 0,02 mol Fe2(SO4)3 v 0,08 mol FeSO4. C. 0,03 mol Fe2(SO4)3 v 0,06 mol FeSO4. D. 0,12 mol FeSO4. Cu 94. 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. 35,50. B. 38,72. C. 34,36. D. 49,09. Cu 95. 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. 0,672. B. 1,792. C. 0,448. D. 0,746. Cu 96. 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. 13,32 gam. C. 8,88 gam. D. 13,92 gam. Cu 97. 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 mt lng d axit nitric (c, ngui), sau khi kt thc phn ng sinh



ra 6,72 lt kh NO2 (sn phm kh duy nht, ktc). Gi tr ca m l A. 10,5. B. 12,3. C. 11,5. D. 15,6. Cu 98. Th tch dung dch HNO3 1M (long) t nht cn dng ho 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. 0,8 lt. B. 1,0 lt. C. 1,2 lt. D. 0,6 lt. Cu 99. 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. N2O v Fe. C. N2O v Al. D. NO2 v Al. Cu 100. 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. B. 3,84. C. 0,64. D. 3,20. Cu 101. 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. 120. C. 360. D. 400. Cu 102. 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. B. 106,38. C. 97,98. D. 34,08. Cu 103. Cho 61,2 gam hn hp X gm Cu v Fe3O4 tc dng vi dung dch HNO3long, 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. 151,5. B. 108,9. C. 137,1. D. 97,5. Cu 104. 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 2,24. B. 17,8 v 4,48. C. 10,8 v 2,24. D. 10,8 v 4,48. Cu 105. Ha tan hon ton 1,23 gam hn hp X gm Cu v Al vo dung dch HNO3c, nng thu c 1,344 lt kh NO2 (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. Cu 106. Khi ho tan hon ton 0,02 mol Au bng nc cng toan th s mol HCl phn ng v s mol NO (sn phm kh duy nht) to thnh ln lt l A. 0,06 v 0,02. B. 0,06 v 0,01. C. 0,03 v 0,01. D. 0,03 v 0,02. Cu 107. Ha tan hon ton 20,88 gam mt oxit st bng dung dch H2SO4 c, nng thu c dung dch X v 3,248 lt kh SO2 (sn phm kh duy nht, ktc). C cn dung dch X, thu c m gam mui sunfat khan. Gi tr ca m l A. 58,0. B. 48,4. C. 54,0. D. 52,2. Cu 108. Cho x mol Fe tan hon ton trong dung dch cha y mol H2SO4 (t l x : y = 2 : 5), thu c mt sn phm kh duy nht v dung dch ch cha mui sunfat. S mol electron do lng Fe trn nhng khi b ho tan l A. 2x. B. 3x. C. y. D. 2y. Cu 109. Cho 0,3 mol bt Cu v 0,6 mol Fe(NO3)2vo dung dch cha 0,9 mol H2SO4 (long). Sau khi cc phn ng xy ra hon ton, thu c V lt kh NO (sn phm kh duy nht, ktc). Gi tr ca V l A. 6,72. B. 8,96. C. 4,48. D. 10,08. Cu 110. Ho tan hon ton 2,44 gam hn hp bt X gm FexOy v Cu bng dung dch H2SO4c nng (d). Sau phn ng thu c 0,504 lt kh SO2 (sn phm kh duy nht, ktc) v dung dch cha 6,6 gam hn hp mui sunfat. Phn trm khi lng ca Cu trong X l A. 13,11%. B. 39,34%. C. 26,23%. D. 65,57%. Cu 111. Nung 2,23 gam hn hp X gm cc kim loi Fe, Al, Zn, Mg trong oxi, sau mt thi gian thu c 2,71 gam hn hp Y. Ho tan hon ton Y vo dung dch HNO3 (d), thu c 0,672 lt kh NO (sn phm kh duy nht, ktc). S mol HNO3 phn ng l A. 0,12. B. 0,16. C. 0,14. D. 0,18. Cu 112. Cho 0,87 gam hn hp gm Fe, Cu v Al vo bnh ng 300 ml dung dch H2SO4 0,1M. Sau khi cc phn ng xy ra hon ton, thu c 0,32 gam cht rn v c 448 ml kh (ktc) thot ra.Thm tip vo bnh 0,425 gam NaNO3, khi cc phn ng kt thc th th tch kh NO (ktc, sn phm kh duy nht) to thnh v khi lng mui trong dung dch l A. 0,112 lt v 3,750 gam. B. 0,112 lt v 3,865 gam. C. 0,224 lt v 3,750 gam. D. 0,224 lt v 3,865 gam. Cu 113. Cho 7,68 gam Cu vo 200 ml dung dch gm HNO3 0,6M v H2SO4 0,5M. Sau khi cc phn ng xy ra hon ton (sn phm kh duy nht l NO), c cn cn thn ton b dung dch sau phn ng th khi lng mui khan thu c l



A. 19,20 gam. B. 22,56 gam. C. 20,16 gam. D. 19,76 gam. Cu 114. un nng m gam hn hp Cu v Fe c t l khi lng tng ng 7 : 3 vi mt lng dung dch HNO3. Khi cc phn ng kt thc, thu c 0,75m gam cht rn, dung dch X v 5,6 lt hn hp kh (ktc) gm NO v NO2 (khng c sn phm kh khc ca N

+5). Bit lng HNO3 phn ng l 44,1 gam. Gi tr ca m l

A. 50,4. B. 40,5. C. 44,8. D. 33,6. Cu 115. Cho 1,82 gam hn hp bt X gm Cu v Ag (t l s mol tng ng 4 : 1) vo 30 ml dung dch gm H2SO4 0,5M v HNO3 2M, sau khi cc phn ng xy ra hon ton, thu c a mol kh NO (sn phm kh duy nht ca N

+5). Trn a mol NO trn vi 0,1 mol O2 thu c hn hp kh Y. Cho ton b Y tc dng vi H2O, thu c

150 ml dung dch c pH = z. Gi tr ca z l A. 4. B. 3. C. 1. D. 2. Cu 116. Dung dch A cha (0,02 mol Fe(NO3)3 v 0,3 mol HCl) c kh nng ho tan c Cu vi khi lng ti a l: A. 7,2 gam. B. 5,76gam. C. 6,4 gam. D. 9,6gam.

Cu 117. Ha tan 0,1 mol FeCO3 vo dung dch HNO3 long (va ) thu c dung dch X v hn hp kh gm CO2 v NO (sn phm kh duy nht). Thm H2SO4 long d vo X th dung dch thu c c th ha tan ti a s gam Cu l A. 6,4 B. 25,6 C. 32 D. 3,2 Cu 118. Ha tan 1O gam hn hp mui khan FeSO4 v Fe2(SO4)3 . Dung dch thu c phn ng hon ton vi 1,58 gam KMnO4 trong mi trng axit H2SO4 . Thnh phn % theo khi lng ca Fe2(SO4)3 trong hn hp ban u ? (Fe = 56 . K = 39 , S = 32 , O = 16 , Mn = 55 , H = 1) A. 76% B. 24% C. 38% D. 62% Cu 119. Ho tan 45,9 gam kim loi M bng dung dch HNO3 long thu c hn hp kh gm 0,3 mol N2O v 0,9 mol NO. Kim loi M l: A. Mg B. Fe C. Al D. Zn Cu 120. Ha tan 5,6g Fe bng dd H2SO4 long d thu c dd X. Dd X phn ng va vi V ml dd KMnO4 0,5M. Gi tr ca V l A. 80 B. 40 C. 20 D. 60 Cu 121. Ha tan ht 17,84 gam hn hp A gm ba kim loi l st, bc v ng bng 203,4 ml dung dch HNO3 20% (c khi lng ring 1,115 gam/ml) va . C 4,032 lt kh NO duy nht thot ra (kc) v cn li dung dch X. em c cn dung dch X, thu c m gam hn hp ch gm ba mui khan. Gi tr ca m l:

A. 54,28 gam B. 51,32 gam C. 45,64 gam D. 60,27 gam Cu 122. Ho tan ht m gam hn hp gm FeO, Fe2O3 v Fe3O4 bng HNO3 c , nng thu c 4,48 lt kh NO2 (kc). C cn dung dch sau phn ng c 145,2 gam mui khan. Gi tr ca m l: A. 35,7g. B. 46,4g. C. 15,8g. D. 77,7g. Cu 123. Ha tan ht m gam hn hp gm FeO, Fe

2O

3, Fe

3O

4 bng HNO

3 c nng thu c 4,48 lt kh NO

2

(kc). C cn dung dch sau phn ng c 142,2 gam mui khan. Gi tr m l: A. 46,6 gam B. 35,7 gam C. 15,8 gam D. 77,7 gam Cu 124. Ha tan hon ton 1,23 gam hn hp X gm Cu v Al vo dung dch HNO3 c, nng thu c 1,344 lt kh NO2 (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 2,25. B. 78,05% v 2,25. C. 21,95% v 0,78. D. 78,05% v 0,78. Cu 125. Ho tan hon ton 12 gam hn hp X gm Fe v Cu bng dung dch HNO3 d, kt thc th nghim thu c 6,72 lt (kc) hn hp kh B gm NO v NO2 c khi lng 12,2 gam. Khi lng mui nitrat sinh ra l: A. 30,6 gam B. 39,9 gam C. 43,0 gam D. 55,4 gam Cu 126. Ha tan hon ton 25,6 g cht rn X gm Fe, FeS, FeS2 v S bng dung dch HNO3 d thy thot ra V lit kh NO (sn phm kh duy nht, ktc) v dung dch Y. Thm Ba(OH)2 d vo Y thu c 126,25 g kt ta. Gi tr ca V l

A. 17,92 B. 19,04 C. 24,64 D. 27,58 Cu 127. Ho tan hon ton 6,48 gam Al vo V lt dung dch HNO3 1M (ly d 25% so vi lng cn thit) th thu c 1,568 lt kh X duy nht ktc v dung dch Y. C cn cn thn dung dch Y thu c 52,72 gam cht rn khan. Th tch ca dung dch HNO3 ban u l A. 0,9 B. 1,125 C. 1,25 D. 1,1 Cu 128. Ha tan hon ton hn hp 2 kim loi Fe v Cu vo dd HNO

3 c nng th thu c 22,4 lt kh mu nu.

Nu thay HNO3 bng dd H

2SO

4 c nng th th tch kh SO

2 l:

A. 11,2 lit B. 2,24 lit C. 33,6 lit D. 22,4 lit



Cu 129. Ha tan hon ton hn hp A gm 0,04 mol FeCO3 v 0,02 mol FeS

2 bng dd HNO

3 c, nng, dd thu

c sau phn ng tc dng vi dd Ba(OH)2 d c kt ta X, ly X em nung n khi lng khng i c m

gam cht rn Y. Gi tr ca m l: A. 4,8 B. 14,12 C. 9,46 D. 8,4 Cu 130. Ha tan hon ton hn hp FeS v FeCO

3 bng dd HNO

3 c hn hp kh E gm 2 kh X v Y c t

khi so vi hidro bng 22,85. X, Y ln lt l: A. CO

2, N

2O B. N2, CO

2 C. NO, CO

2 D. NO

2, CO

2

Cu 131. Ha tan hon ton hn hp gm cc kim loi M1 (ha tr II) v M

2 (ha tr III) trong dung dch H

2SO

4

m c nng thu c 6,72 lt kh SO2 (kc). Nu cng ha tan ht hn hp kim loi ni trn trong dung dch

HNO3 long th th tch kh NO (kc) thu c l:

A. 2,24 lt B. 6,72 lt C. 1,12 lt D. 4,48 lt Cu 132. Ha tan hon ton m gam hn hp rn A gm Ag, Cu trong dung dch cha hn hp axit HNO3 v H2SO4 thu c dung dch B cha 19,5 gam hn hp mui v hn hp kh X (gm 0,05 mol NO v 0,01 mol SO2). Gi tr ca m l: A. 9,24 gam B. 9,75 gam C. 15,44 gam D. 17,36 gam Cu 133. Ho tan hn hp Fe, Fe2O3 bng dung dch H2SO4 long d thu c dung dch X v 3,36 lit H2 (kc). Ly 1/10 dung dch X tc dng vi dung dch KMnO4 0,1 M. Th tch dung dch KMnO4 cn dng l: A. 30 ml B. 60 ml C. 50 ml D. 300 ml Cu 134. Hn hp A gm 0,04 mol Al v 0,06 mol Mg. Nu ha tan hon ton hn hp ny trong HNO3 thu c 0,03 mol sn phm X do s kh ca N+5. Nu ha tan hon ton hn hp A trong H2SO4 c, nng cng thu c 0,03 mol sn phm Y do s kh ca S+6. X v Y ln lt l A. NH4NO3 v H2S B. NO2 v SO2 C. NO2 v H2S D. NO v SO2 Cu 136. Hn hp X gm (Fe, Fe2O3, Fe3O4, FeO) vi s mol mi cht l 0,1 mol, ho tan ht vo dung dch Y gm (HCl v H2SO4 long) d thu c dung dch Z. Nh t t dung dch Cu(NO3)2 1M vo dung dch Z cho ti khi ngng thot kh NO. Th tch dung dch Cu(NO3)2 cn dng v th tch kh thot ra ( ktc) l:

A. 50ml; 2,24 lt. B. 50ml; 1,12 lt. C. 25 ml; 1,12 lt. D. 500ml; 22,4 lt. Cu 137. Hn hp X gm 3 oxit c s mol bng nhau: FeO, Fe2O3, Fe3O4. Cho m gam hn hp X tc dng vi dung dch HNO3 (d), thu c dung dch Y. Cho Y tc dng vi dung dch NaOH long (d), thu c 6,42 gam kt ta mu nu . Gi tr ca m l:

A. 4,80 B. 2,32 C. 1,60 D. 4,64 Cu 138. Hn hp X gm Fe v Cu c t l tng ng l 4:7 v khi lng. trung ha hon ton 24,64 gam X cn dng ti thiu V lit dung dch HNO3 nng a1 M (nu sn phm kh ch c NO2) v cng cn V lit dung dch HNO3 a2 M (nu sn phm kh ch c NO). Ki t l T = a1 : a2 l:

A. 1 T 1,5. B. T = 1,5. C. 1,5 T 2. D. T = 2. Cu 139. Hn hp X gm hai kim loi Cu v Ag. Ha tan hon ton m gam hn hp X trong dung dch cha 2 axit HNO3, H2SO4 thu c dung dch Y cha 7,06 gam mui v hn hp kh Z cha 0,05 mol NO2 v 0,01 mol SO2. Gi tr ca m l: A. 2,58 gam B. 3,00 gam C. 3,06 gam D. 3,32 gam Cu 140. Khi ho tan hon ton 0,02 mol Au bng nc cng toan th s mol HCl phn ng v s mol NO (sn phm kh duy nht) to thnh ln lt l A. 0,03 v 0,02. B. 0,06 v 0,01. C. 0,03 v 0,01. D. 0,06 v 0,02. Cu 141. Th tch dung dch HNO3 1M (long) t nht cn dng ho 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. 1,2 lt. B. 1,0 lt. C. 0,6 lt. D. 0,8 lt.

Chuyn 4: IN LI pH CA DUNG DCH BI TP LIN QUAN N BAZ

Cu 1. Ba dung dch sau c cng nng mol/l: H2SO4; Na2SO4; NaHSO4. pH ca chng tng theo th t: A. Na2SO4; NaHSO4; H2SO4 B. Na2SO4; H2SO4; NaHSO4 C. NaHSO4; H2SO4; Na2SO4 D. H2SO4; NaHSO4; Na2SO4 Cu 2. Cc hp cht trong dy cht no di y u c tnh lng tnh? A. Cr(OH)3, Pb(OH)2, Mg(OH)2. B. Cr(OH)3, Zn(OH)2, Mg(OH)2. C. Cr(OH)3, Fe(OH)2, Mg(OH)2. D. Cr(OH)3, Zn(OH)2, Pb(OH)2. Cu 3. Cho 3 dung dch sau c cng nng mol/l: NaHCO3, NaOH, Na2CO3, pH ca chng tng theo th t:



A. NaOH; NaHCO3; Na2CO3 B. NaOH; Na2CO3; NaHCO3 C. NaHCO3; Na2CO3; NaOH D. Na2CO3; NaOH; NaHCO3 Cu 4. Cho 4 dung dch: H2SO4 long, AgNO3, CuSO4, AgF. Cht khng tc dng c vi c 4 dung dch trn l A. BaCl2. B. NH3. C. KOH. D. NaNO3. Cu 5. Cho 4 phn ng: Cc phn ng thuc loi phn ng axit - baz l (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 . A. (3), (4). B. (2), (4). C. (1), (2). D. (2), (3). Cu 6. Cho ba dung dch c cng nng mol: (1) H2NCH2COOH, (2) CH3COOH, (3) CH3CH2NH2. Dy xp theo th t pH tng dn l: A. (2), (1), (3). B. (2), (3), (1). C. (1), (2), (3). D. (3), (1), (2). Cu 7. Cho bn hn hp, mi hn hp gm hai cht rn c s mol bng nhau: Na2O v Al2O3; Cu v FeCl3; BaCl2v CuSO4; Ba v NaHCO3. S hn hp c th tan hon ton trong nc (d) ch to ra dung dch l A. 4. B. 1. C. 2. D. 3. Cu 8. Cho cc cp cht sau y tc dng vi nhau: Cp cht khng xy ra phn ng l

(1) Cl2 + O2 (2) H2S + O2 (3) H2S + Pb(NO3)2 (4) Cl2 + NaOH (5) dung dch NH3 + dung dch AlCl3 (6) dung dch Br2 + FeSO4 (7) dung dch KI + FeCl3 (8) dung dch NaAlO2 + dung dch AlCl3 (9) CuS + HCl c (10) dung dch NaHCO3 + dung dch Ba(OH)2

A. 1, 9 B. 2, 6 C. 1, 9,8 D. 6, 9 Cu 9. 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. 7. B. 4. C. 6. D. 5. Cu 10. Cho cc cht: NaHCO3, CO, Al(OH)3, Fe(OH)3, HF, Cl2, NH4Cl. S cht tc dng c vi dung dch NaOH long nhit thng l A. 4. B. 5. C. 3. D. 6. Cu 11. 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. (3), (2), (4), (1). B. (2), (3), (4), (1). C. (4), (1), (2), (3). D. (1), (2), (3), (4). Cu 12. Cho cc dung dch sau: NaHCO3 (X1) ; CuSO4 (X2) ; (NH4)2CO3 (X3) ; NaNO3 (X4) ; MgCl2 (X5) ; KCl (X6). Nhng dung dch khng to kt ta khi cho Ba vo l: A. X1, X4, X5 B. X1, X4, X6 C. X1, X3, X6 D. X4, X6. Cu 13. Cho cc dung dch: HCl, NaOH c, NH3, KCl. S dung dch phn ng c vi Cu(OH)2 l A. 2. B. 3. C. 1. D. 4. Cu 14. Cho cc phn ng ha hc sau: (1) (NH4)2SO4 + BaCl2 (3) Na2SO4 + BaCl2 (5) (NH4)2SO4 + Ba(OH)2 (2) CuSO4+ Ba(NO3)2 (4) H2SO4 + BaSO3 (6) Fe2(SO4)3 + Ba(NO3)2 Cc phn ng u c cng mt phng trnh ion rt gn l: A. (2), (3), (4), (6). B. (1), (3), (5), (6). C. (3), (4), (5), (6). D. (1), (2), (3), (6). Cu 15. Cho dy cc cht sau: Al, NaHCO3, (NH4)2CO3, NH4Cl, Al2O3, Zn, K2CO3, K2SO4. C bao nhiu cht trong dy va tc dng c vi dung dch HCl, va tc dng c vi dung dch NaOH? A. 5. B. 2. C. 3. D. 4. Cu 16. 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. 4. C. 5. D. 2. Cu 17. Cho dy cc cht: Cr(OH)3, Al2(SO4)3, Mg(OH)2, Zn(OH)2, MgO, CrO3. S cht trong dy c tnh cht lng tnh l A. 2. B. 3. C. 4. D. 5. Cu 18. Cho dy cc cht: KAl(SO4)2.12H2O, C2H5OH, C12H22O11 (saccaroz), CH3COOH, Ca(OH)2, CH3COONH4. S cht in li l A. 2. B. 4. C. 5. D. 3. Cu 19. Cho dy cc cht: KOH, Ca(NO3)2, SO3, NaHSO4, Na2SO3, K2SO4. S cht trong dy to thnh kt ta khi phn ng vi dung dch BaCl2 l A. 2. B. 4. C. 6. D. 3. Cu 20. Cho dy cc cht: NaOH, NaCl, NaNO3, Na2SO4. Cht trong dy phn ng c vi dung dch BaCl2 l A. NaNO3. B. Na2SO4. C. NaOH. D. NaCl. Cu 21. Cho dy cc cht: NaOH, Sn(OH)2, Pb(OH)2, Al(OH)3, Cr(OH)3. S cht trong dy c tnh cht lng tnh l A. 1. B. 3. C. 4. D. 2.



Cu 22. Cho dy cc cht: NH4Cl, (NH4)2SO4, NaCl, MgCl2, FeCl2, AlCl3. S cht trong dy tc dng vi lng d dung dch Ba(OH)2 to thnh kt ta l A. 5. B. 3. C. 4. D. 1. Cu 23. Cho dung dch Ba(HCO3)2 ln lt vo cc dung dch: CaCl2, Ca(NO3)2, NaOH, Na2CO3, KHSO4, Na2SO4, Ca(OH)2, H2SO4, HCl. S trng hp c to ra kt ta l A. 7. B. 5. C. 4. D. 6. Cu 24. Cho dung dch Ca(OH)2 vo cc ng dung dch Ca(HCO3)2 thy c A. kt ta trng sau kt ta tan dn. B. bt kh bay ra. C. kt ta trng xut hin. D. bt kh v kt ta trng. Cu 25. Cho dung dch KHSO4 vo lng d dung dch Ba(HCO3)2 phn ng to ra: A. kh CO2, cht khng tan BaSO4, phn dung dch c K2SO4 v H2O B. kh CO2, cht khng tan BaSO4, phn dung dch c cha KHCO3 v H2O C. khng c phn ng ha hc xy ra D. to hai cht khng tan BaSO4, BaCO3, phn dung dch cha KHCO3, H2O Cu 26. Cho dung dch Na2CO3 vo dung dch Ca(HCO3)2 thy A. khng c hin tng g. B. c kt ta trng. C. c kt ta trng v bt kh. D. c bt kh thot ra. Cu 27. Cho dung dch NaOH d vo hn hp dung dch (NaCl, CuCl2, AlCl3, MgCl2) thu kt ta nung n khi lng khng i c hn hp rn X. Cho kh CO d i qua X nung nng, phn ng xong thu c hn hp rn E. Cc cht trong E l: A. MgO, Cu B. Mg, Cu C. Mg, CuO D. Al, Cu, Mg Cu 28. 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. 1,00. B. 4,24. C. 2,88. D. 4,76. Cu 29. C 4 dung dch mui ring bit: CuCl2, ZnCl2, FeCl3, AlCl3. Nu thm dung dch KOH (d) ri thm tip dung dch NH3 (d) vo 4 dung dch trn th s cht kt ta thu c l A. 1. B. 3. C. 4. D. 2. Cu 30. C 4 ng nghim c nh s theo th t 1, 2, 3, 4. Mi ng nghim cha mt trong cc dung dch AgNO3, ZnCl2, HI, Na2CO3. Bit rng: - Dung dch trong ng nghim 2 v 3 tc dng c vi nhau sinh ra cht kh; - Dung dch trong ng nghim 2 v 4 khng phn ng c vi nhau. Dung dch trong cc ng nghim 1, 2, 3, 4 ln lt l: A. ZnCl2, HI, Na2CO3, AgNO3. B. AgNO3, Na2CO3, HI, ZnCl2. C. AgNO3, HI, Na2CO3, ZnCl2. D. ZnCl2, Na2CO3, HI, AgNO3. Cu 31. C cc th nghim sau: (I) Nhng thanh st vo dung dch H2SO4 long, ngui. (II) Sc kh SO2 vo nc brom. (III) Sc kh CO2 vo nc Gia-ven. (IV) Nhng l nhm vo dung dch H2SO4c, ngui. S th nghim xy ra phn ng ho hc l A. 2. B. 1. C. 3. D. 4. Cu 32. C nm dung dch ng ring bit trong nm ng nghim: (NH4)2SO4, FeCl2, Cr(NO3)3, K2CO3, Al(NO3)3. Cho dung dch Ba(OH)2 n d vo nm dung dch trn. Sau khi phn ng kt thc, s ng nghim c kt ta l A. 2. B. 3. C. 4. D. 5. Cu 33. C th phn bit 3 dung dch: KOH, HCl, H2SO4 (long) bng mt thuc th l A. giy qu tm. B. Zn. C. Al. D. BaCO3. Cu 34. nh gi ng gi tr pH ca cc dung dch mui sau: Ba(NO3)2 (1) , Na2CO3 (2) , NaHSO4 (3) , CH3-NH2 (4) , Ba(CH3COO)2 (5) A. 1,2 c pH = 7 B. 4, 5 c pH >7 C. 2, 3, 5 c pH < 7 D. 1, 5 c pH >7 Cu 35. Dy gm cc cht u tc dng c vi dung dch HCl long l: A. KNO3, CaCO3, Fe(OH)3. B. FeS, BaSO4, KOH. C. Mg(HCO3)2, HCOONa, CuO. D. AgNO3, (NH4)2CO3, CuS. Cu 36. Dy gm cc cht in li yu l A. Na2SO3, NaOH, CaCl2, CH3COOH. B. H2S, H3PO4, CH3COOH, Cu(OH)2. C. BaSO4, H2S, CaCO3, AgCl. D. CuSO4, NaCl, HCl, NaOH. Cu 37. Dy gm cc cht va tan trong dung dch HCl, va tan trong dung dch NaOH l: A. Mg(OH)2, Al2O3, Ca(HCO3)2. B. NaHCO3, ZnO, Mg(OH)2. C. NaHCO3, MgO, Ca(HCO3)2. D. NaHCO3, Ca(HCO3)2, Al2O3. Cu 38. Dy gm cc ion (khng k n s phn li ca nc) cng tn ti trong mt dung dch l: A. Ag+ , Na+ , NO3

- ,Cl- . B. H+ , Fe3+ , NO3- ,SO4

2- .C. Al3+ , NH4+ , Br-,OH- . D. Mg2+ , K+ ,SO4

2- , PO43-

Cu 39. Dy gm cc ion cng tn ti trong mt dung dch l:



A. Al3+

, PO43-, Cl-, Ba

2+. B. K

+, Ba

2+, OH-, Cl-. C. Ca

2+, Cl-, Na

+, CO32-. D. Na

+, K

+, OH-, HCO3-.

Cu 40. nh gi s nhim kim loi nng trong nc thi ca mt nh my, ngi ta ly mt t nc, c c ri thm dung dch Na2S vo thy xut hin kt ta mu vng. Hin tng trn chng t nc thi b nhim bi ion A. Fe

2+. B. Cd

2+. C. Cu

2+. D. Pb

2+.

Cu 41. Dung dch axit fomic 0,007M c pH = 3. Kt lun no sau y khng ng? A. in li ca axit fomic s gim khi thm dung dch HCl. B. Khi pha long dung dch trn th in li ca axit fomic tng. C. Khi pha long 10 ln dung dch trn th thu c dung dch c pH = 4. D. in li ca axit fomic trong dung dch trn l 14,29%. Cu 42. Dung dch no sau y c pH > 7? A. dd NaCl. B. dd CH3COONa. C. dd NH4Cl. D. dd Al2(SO4)3. Cu 43. Dung dch no sau y phn ng c vi dung dch Na2CO3 to kt ta? A. NaCl. B. CaCl2. C. KNO3. D. KCl. Cu 44. Ho tan 5 mui: NaCl (1), NH4Cl (2), AlCl3 (3), Na2S (4), C6H5ONa (5) vo nc thnh 5 dung dch, sau cho vo mi dung dch mt mu giy qu tm. Hin tng xy ra l: A. 1,2 khng i mu B. 2,3 qu tm ho C. 3,5 qu tm ho xanh D. 1,4 qu tm ho xanh Cu 45. Ho tan hon ton hn hp Na2O, BaCl2, NaHCO3, NH4Cl c s mol bng nhau vo H2O ri un nh. Sau khi kt thc phn ng thu c dung dch cha mt cht tan. Cht l: A. NH4Cl B. NaOH C. BaCl2 D. NaCl Cu 46. Ho tan hn hp gm: K2O, BaO, Al2O3, Fe3O4 vo nc (d), thu c dung dch X v cht rn Y. Sc kh CO2 n d vo dung dch X, sau khi cc phn ng xy ra hon ton thu c kt ta l A. Fe(OH)3. B. Al(OH)3. C. K2CO3. D. BaCO3. Cu 47. Hn hp no sau y vi s mol thch hp khng th ha tan hon ton trong nc d ? A. Al, NaNO3, NaOH B. K2S, AlCl3, AgNO3 C. Cu, KNO3, H2SO4 D. Na, Al, Zn Cu 48. Hn hp rn X cha cc cht Na

2O, NH

4Cl, NaHCO

3 v BaCl

2 vi s mol mi cht u bng nhau. Cho X

vo nc ly d, un nng. Dung dch thu c cha A. NaCl, NaOH B. NaCl, NaHCO

3, NH

4Cl, BaCl

2

C. NaCl, NaOH, BaCl2

D. NaCl

Cu 50. Hn hp X cha Na2O, NH4NO3, NaHCO3 v Ba(NO3)2 c s mol mi cht u bng nhau. Cho hn hp X vo H2O (d ) un nng, dung dch thu c c cha : A. NaNO3 B. NaNO3, NaOH, Ba(NO3)2 C. NaNO3 , NaOH D. NaNO3, NaHCO3 , NH4NO3 , Ba(NO3)2 Cu 51. Ion CO3

2- cng tn ti vi cc ion sau trong mt dung dch: A. NH4

+, Na+, K+ B. Cu2+, Mg2+, Al3+ C. Fe2+, Zn2+, Al3+ D. Fe3+, HSO4-

Cu 52. Khi cho dung dch Ca(OH)2 vo dung dch Ca(HCO3)2 thy c A. bt kh v kt ta trng. B. bt kh bay ra. C. kt ta trng xut hin. D. kt ta trng sau kt ta tan dn. Cu 53. Mi phn t v ion trong dy sau va c tnh axit, va c tnh baz

A. HSO4-, ZnO, Al2O3, HCO3

-, H2O, CaO B. NH4+, HCO3

-, CH3COO-.

C. ZnO, Al2O3, HCO3-, H2O. D. HCO3

-, Al2O3, Al3+

, BaO.

Cu 54. Mt cc nc c cha cc ion: Na+(0,02 mol), Mg

2+(0,02 mol), Ca

2+(0,04 mol), Cl (0,02 mol), HCO3

(0,10 mol) v SO42 (0,01 mol). un si cc nc trn cho n khi cc phn ng xy ra hon ton th nc cn li trong cc A. c tnh cng tm thi. B. c tnh cng ton phn. C. c tnh cng vnh cu. D. l nc mm. Cu 55. Mt dung dch cha cc ion sau: Na+, Mg2+, Ca2+, Ba2+, H+, Cl-. Mun tch c nhiu cation m khng a ion l vo dung dch, ta c th cho dung dch tc dng vi cc cht no trong cc cht sau y: A. dung dch K2CO3 B. dung dch Na2SO4 C. dung dch NaOH D. dung dch Na2CO3 Cu 56. Mt mu nc cng cha cc ion: Ca

2+, Mg

2+, HCO3

-, Cl

-, SO4

2-. Cht c dng lm mm mu nc

cng trn l A. NaHCO3. B. HCl. C. Na2CO3. D. H2SO4. Cu 57. Nhn bit 5 l mt nhn: KNO3, Cu(NO3)2, FeCl3, AlCl3, NH4Cl ch bng A. dd NaOH. B. dd AgNO3. C. dd Na2SO4. D. dd HCl. Cu 58. Pht biu no sau y khng ng? A. Dung dch Na2CO3 lm phenolphtalein khng mu chuyn sang mu hng. B. Nh dung dch NH3 t t ti d vo dung dch AlCl3, thu c kt ta trng. C. Nh dung dch NH3 t t ti d vo dung dch CuSO4, thu c kt ta xanh. D. Trong cc dung dch: HCl, H2SO4, H2S c cng nng 0,01M, dung dch H2S c pH ln nht.



Cu 59. Phng php loi b tp cht HCl c ln trong kh H2S l: Cho hn hp kh li t t qua mt lng d dung dch A. NaHS. B. Pb(NO3)2. C. AgNO3. D. NaOH. Cu 60. Th nghim no sau y c kt ta sau phn ng? A. Thi CO2n d vo dung dch Ca(OH)2. B. Cho dung dch NH3n d vo dung dch AlCl3. C. Cho dung dch NaOH n d vo dung dch Cr(NO3)3. D. Cho dung dch HCl n d vo dung dch NaAlO2 (hoc Na[Al(OH)4]). Cu 61. 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, Na2SO4. B. NaCl, Na2SO4, Ca(OH)2. C. HNO3, Ca(OH)2, KHSO4, Mg(NO3)2. D. HNO3, NaCl, Na2SO4. Cu 62. Trong s cc dung dch: Na2CO3, KCl, CH3COONa, NH4Cl, NaHSO4, C6H5ONa, nhng dung dch c pH > 7 l A. Na2CO3, C6H5ONa, CH3COONa. B. KCl, C6H5ONa, CH3COONa. C. Na2CO3, NH4Cl, KCl. D. NH4Cl, CH3COONa, NaHSO4. Cu 63. Trng hp no sau y khng xy ra phn ng ho hc? A. Sc kh Cl2vo dung dch FeCl2. B. Sc kh H2S vo dung dch FeCl2. C. Sc kh H2S vo dung dch CuCl2. D. Cho Fe vo dung dch H2SO4 long, ngui. Cu 64. 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. 4. B. 3. C. 2. D. 1. Cu 65. Cho a lt dung dch KOH c pH = 12,0 vo 8,00 lt dung dch HCl c pH = 3,0 thu c dung dch Y c pH =11,0. Gi tr ca a l A. 0,80. B. 0,12. C. 1,60. D. 1,78. Cu 66. Cho dung dch X cha hn hp gm CH3COOH 0,1M v CH3COONa 0,1M. Bit 25

oC, Kaca

CH3COOH l 1,75.10-5

v b qua s phn li ca nc. Gi tr pH ca dung dch X 25oC l

A. 2,88. B. 4,24. C. 4,76. D. 1,00. Cu 67. Cho m gam hn hp Mg, Al vo 250 ml dung dch X cha hn hp axit HCl 1M v axit H2SO4 0,5M, thu c 5,32 lt H2 ( ktc) v dung dch Y (coi th tch dung dch khng i). Dung dch Y c pH l A. 2. B. 1. C. 6. D. 7. Cu 68. Dung dch axit fomic 0,46% ( D = 1g /ml) c pH = 3. in li ca axit fomic bng A. 1% B. 4,6% C. 1,3% D. 10% Cu 69. 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 = x + 2. B. y = 2x. C. y = x - 2. D. y = 100x. Cu 70. Dung dch NH3 0,1 M c in li bng 1%. pH ca dung dch NH3 bng: A. 10,5 B. 11,0 C. 12,5 D.13,0 Cu 71. Dung dch NH3 v dung dch NaOH c cng nng mol, pH ca 2 dung dch tng ng l x v y. Gi thit c 100 phn t NH3 th c 1 phn t in li. Quan h gi x v y l A. y = x 2 B. y = 2x C. y = x + 2 D. y = 100x Cu 72. Dung dch X gm CH3COOH 1M (Ka= 1,75.10

-5 ) v HCl 0,001M. Gi tr pH ca dung dch X l A. 2,43. B. 2,55. C. 1,77. D. 2,33. Cu 73. Khi cho 100ml dung dch KOH 1M vo 100ml dung dch HCl thu c dung dch c cha 6,525gam cht tan. Nng mol (hoc mol/l) ca HCl trong dung dch dng l (Cho H = 1; O = 16; Cl = 35,5; K = 39) A. 0,25M. B. 0,5M. C. 1M. D. 0,75M. Cu 74. Thm 0,1 mol CH3COONa vo 1,0 lt dung dch CH3COOH 0,1M thu c dung dch X. Bit hng s

in li ca CH3COOH l Ka = 1,8.10-5; th tch dung dch thay i khng ng k.

16 Chuyen de on Thi Dai Hoc

Documents