Kha hc LTH KIT-1: Mn Ha hc (Thy Phm Ngc Sn) Pin in ha v n mn kim loi

Hocmai.vn Ngi trng chung ca hc tr Vit Tng i t vn: 1900 58-58-12 - Trang | 1 -

Cu 1. Cho phn ng :2Ag+ +Zn Zn2+ +2Ag. Th in cc chun ca Ag+/Ag v Zn2+/Zn ln lt bng 0,8V v - 0,76V. Sut in ng ca pin in ho trn l A. 0,04 V. B. 1,56V. C. -0,04V. D. 1,36V.

Cu 2. Cho cc tr s th in cc chun: E

0(Ag

+/ Ag) = + 0,80 V;E

0 (Al

3+/Al) = -1,66V;

E0 (Mg

2+/Mg) = - 2,37V;E

0 (Zn

2+/Zn) = - 0,76V;

E0 (Cu

2+/Cu) = + 0,34V.

Gi tr 1,56V l sut in ng ca pin in ho A. Mg v Al. B. Zn v Cu. C. Mg v Ag. D. Zn v Ag.

Cu 3. Cho E0 (Al

3+/Al) = -1,66V; E

0 (Sn

2+/Sn) = -0,14V. Chiu ca phn ng ho hc gia hai cp oxi

ho-kh Al3+/Al vi Sn2+/Sn v sut in ng chun ca pin in ho tng ng l

A. 2Al3+

+ 3Sn 2Al + 3Sn2+

; E0ph = 1,8V .

B. 2Al3+

+ 3Sn 2Al + 3Sn2+

; E0ph = 1,52V.

C. 2Al + 3Sn2+

2Al3+

+ 3Sn ; E0ph = 1,8V .

D. 2Al + 3Sn2+

2Al3+

+ 3Sn ; E0ph = 1,52V.

Cu 4. Cho E0 (Cd

2+/Cd) = -0,40V; E

0 (Ag

+/Ag) = +0,80V. Chiu ca phn ng ho hc gia hai cp oxi ho-kh Cd2+/Cd vi Ag+/Ag v sut in ng chun ca pin in ho tng ng l

A. Cd2+

+ 2Ag Cd + 2Ag+ ; E

0ph = 0,4V.

B. Cd + 2Ag+ Cd

2+ + 2Ag; E

0ph = 1,2V.

C. Cd2+

+ 2Ag Cd + 2Ag+ ; E

0ph = 1,2V .

D. Cd + 2Ag+ Cd

2+ + 2Ag; E

0ph = 0,4V.

Cu 5. Khi pin Zn-Cu phng in, ti cc dng xy ra qu trnh : A. Oxi ha Cu thnh Cu

2+. B. Oxi ha Zn thnh Zn

2+.

C. Kh Cu2+ thnh Cu. D. Kh Zn2+ thnh Zn. Cu 6. Trong pin in ha Zn-Cu, qu trnh oxi ha trong pin l :

A. Zn2+

+ 2e Zn. B. Zn Zn2+

+ 2e.

C. Cu2+

+ 2e Cu. D. Cu Cu2+

+ 2e.

Cu 7. Sau mt thi gian pin in ha Zn Cu hot ng. Nhn xt no sau y khng ng ? A. Khi lng cc km gim, khi lng cc ng tng. B. Nng Cu2+ tng, nng Zn2+ gim. C. Nng Zn2+ tng, nng Cu2+ gim. D. Sut in ng ca pin gim dn.

Cu 8. Cho 2o

Cu /CuE = + 0,34V, 3 2

o

Fe /FeE = + 0,77V, 2

o

Zn /ZnE = 0,76V, 2

o

Ni /NiE = 0,26V. Phn ng ha

hc no sau y khng ng ?

A. Zn + Cu2+

Zn2+

+ Cu. B. Fe + Cu2+

Fe2+

+ Cu.

C. Ni + Fe3+

Ni2+

+ Fe. D. Cu + Fe3+

Cu2+

+ Fe2+

.

Cu 9. Cho 2o

Cu /CuE = + 0,34V v 2

o

Ni /NiE = 0,26V. Sut in ng chun ca pin in ha Ni Cu l :

A. 0,08V. B. 0,60V. C. 0,34V. D. 0,26V.

Cu 10. Bit sut in ng chun ca pin Zn Cu l 1,10V v 2o

Zn /ZnE = 0,76V. Th in cc chun ca

cp Cu2+/Cu l :

A. +1,86V. B. +0,34V. C. 0,34V. D. + 0,76V.

PIN IN HA V N MN KIM LOI

(BI TP T LUYN)

Gio vin: PHM NGC SN

Cc bi tp trong ti liu ny c bin son km theo bi ging Pin in ha v n mn kim loi thuc Kha

hc LTH KIT1: Mn Ha hc (Thy Phm Ngc Sn) ti website Hocmai.vn gip cc Bn kim tra, cng c

li cc kin thc c gio vin truyn t trong bi ging tng ng. s dng hiu qu, Bn cn hc trc bi

ging Pin in ha v n mn kim loi sau lm y cc bi tp trong ti liu ny.

Kha hc LTH KIT-1: Mn Ha hc (Thy Phm Ngc Sn) Pin in ha v n mn kim loi

Hocmai.vn Ngi trng chung ca hc tr Vit Tng i t vn: 1900 58-58-12 - Trang | 2 -

Cu 11. Bit sut in ng chun ca cc pin in ha : oCu-AgE = 0,46V, oZn-CuE = 1,10V,

oPb CuE = 0,47V.

Dy cc ion xp theo chiu tng dn tnh oxi ha t tri qua phi l : A. Zn

2+, Pb

2+, Cu

2+, Ag

+. B. Pb

2+, Zn

2+, Cu

2+, Ag

+.

C. Zn2+

, Cu2+

, Pb2+

, Ag+. D. Pb

2+, Zn

2+, Ag

+, Cu

2+.

Cu 12: Cho sut in ng chun Eo ca cc pin in ho: Eo(Cu-X) = 0,46V ; Eo(Y-Cu) = 1,1V ; Eo(Z-Cu) = 0,47V (X, Y, Z l ba kim loi). Dy cc kim loi xp theo chiu tng dn tnh kh t tri sang phi l

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

Cu 13: Cho bit phn ng oxi ho - kh xy ra trong pin in ho Fe-Cu:

Fe+ 2Cu

2Fe + Cu ; 2

o

Fe FeE = 0,44V, 2

o

Cu CuE = + 0,34V.

Sut in ng chun ca pin in ho Fe-Cu l A. 1,66V. B. 0,10V. C. 0,78V. D. 0,92V.

Cu 14: Cho sut in ng chun ca cc pin in ho: Zn-Cu l 1,1V ; Cu-Ag l 0,46V. Bit th in

cc chun oAg Ag

E = +0,8V. Th in cc chun 2o

Zn ZnE v 2

o

Cu CuE c gi tr ln lt l

A. 0,76V v +0,34V. B. 1,46V v 0,34V. C. +1,56V v +0,64V. D. 1,56V v +0,64V.

Cu 15: Cho cc th in cc chun: 3o

Al AlE = 1,66V ; 2

o

Zn ZnE = 0,76 V ; 2

o

Pb PbE = 0,13 V ;

2o

Cu CuE = +0,34V. Trong cc pin sau y, pin no c sut in ng chun ln nht ?

A. Pin Zn-Cu. B. Pin Zn-Pb. C. Pin Al-Zn. D. Pin Pb-Cu.

Cu 16 : Mt vt bng st trng thic ( xc su ti lp st) tip xc vi mi trng cht in li th : A. C Fe v Sn iu b n mn. B. C Fe v Sn khng b n mn. C. Fe b n mn, Sn khng b n mn. D. Sn b n mn, Fe khng b n mn. Cu 17: V tu i bin (phn chm di nc) thp thng b g. C ch ca qu trnh n mn in cc m v in cc dng ln lt l

A. Fe 2Fe + 2e v 2H2O + O2 + 4e 4 OH .

B. Fe 3Fe + 3e v 2 H + 2e H2 .

C. Fe 2Fe + 2e, 2Fe 3Fe + 1e v 2H2O + O2 + 4e 4 OH .

D. Fe 2Fe + 2e, 2Fe 3Fe + 1e v 2 H + 2e H2 .

Cu 18: C ba thanh kim loi l: st nguyn cht (X), km nguyn cht (Y), st ln km (Z). Trong khng kh m th A. thanh X d b n mn nht. B. thanh Y d b n mn nht. C. thanh Z d b n mn nht. D. cc thanh b n mn nh nhau. Cu 19: Cho cc cp kim loi nguyn cht tip xc trc tip vi nhau: Fe v Pb ; Fe v Zn ; Fe v Sn ; Fe v Ni. Khi nhng cc cp kim loi trn vo dung dch axit, s cp kim loi trong Fe b ph hu trc l A. 4. B. 1. C. 2. D. 3.

Cu 20: Cho cc hp kim sau: Cu-Fe (I) ; Zn-Fe (II) ; Fe-C (III) ; Sn-Fe (IV). Khi tip xc vi dung dch cht in li th cc hp kim m trong Fe u b n mn trc l A. I, II v IV. B. I, II v III. C. I, III v IV. D. II, III v IV.

Cu 21: Mt l st ang tc dng vi dung dch H2SO4 long, nu thm vi git dung dch CuSO4 vo th lng bt kh H2 A. bay ra khng i. B. khng bay ra na. C. bay ra t hn. D. bay ra nhiu hn. Cu 22: C 4 dung dch ring bit: a) HCl, b) CuCl2, c) FeCl3, d) HCl c ln CuCl2. Nhng vo mi dung dch mt thanh Fe nguyn cht. S trng hp xut hin n mn in ho hc l A. 0. B. 1. C. 2. D. 3.

Cu 23: Tin hnh bn th nghim sau: - (1): Nhng thanh Fe vo dung dch FeCl3 ;- (2): Nhng thanh Fe vo dung dch CuSO4 ; - (3): Nhng thanh Cu vo dung dch FeCl3 ; - (4): Cho thanh Fe tip xc vi thanh Cu ri nhng vo dung dch HCl.

Kha hc LTH KIT-1: Mn Ha hc (Thy Phm Ngc Sn) Pin in ha v n mn kim loi

Hocmai.vn Ngi trng chung ca hc tr Vit Tng i t vn: 1900 58-58-12 - Trang | 3 -

S trng hp xut hin n mn in ha hc l A. 1. B. 2. C. 4. D. 3.

Gio vin: Phm Ngc Sn

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