51. |
One Daniell cell contains 1 M ZnSO4 and 1 M CuSO4 solutions in anode and cathode half cells respectively. Another Daniell cell contains 2 M ZnSO4 and 2 M CuSO4 solutions in anode and cathode half cells respectively. if their standard cell potentials are respectively E1 and E2 V, then _____ .
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Answer:
Option (d) |
52. |
What are the conditions for the reaction to be spontaneous in an electrochemical cell ?
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Answer:
Option (c) |
53. |
Represent the cell formed by combination of copper half cell with hydrogen electrode.
E°Cu2+ Ι Cu = 0.34 V;
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Answer:
Option (b) |
54. |
Which of the following reaction occurs at cathode during the discharging of lead storage cell ?
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Answer:
Option (c) |
55. |
For the cell reaction :
Cu2+(aq)+ Zn(s) →Zn2+(aq) +Cu(s) (C1) (C2) free energy change (ΔG) is a function of which ?
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Answer:
Option (b) |
56. |
Which of the following reaction is not possible ?
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Answer:
Option (c) |
57. |
emf of the cell
Zn Ι ZnSO4(0.01 M) ΙΙ CuSO4(1.0 M) Ι Cu is E1.When concentration of ZnSO4 is 1.0 M, and that of CuSO4 is kept 0.01 M. The emf is E2. What is the relation between E1 and E2 ?
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Answer:
Option (a) |
58. |
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Answer:
Option (b) |
59. |
Calculate Ecell for the following cell.
AgΙ Ag+(0.01 M) ΙΙ Ag+(0.1 M) Ι Ag ;
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Answer:
Option (d) |
60. |
What is cell potential of the following cell.
E°(Cr3+ΙCr) = -0.72V and E°(Fe2+ΙFe) = -0.42V Cr Ι Cr3+(0.1 M) ΙΙ Fe2+(0.01 M) Ι Fe
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Answer:
Option (b) |