E0 for the cell, Zn|Zn2+(aq)||Cu2+(aq)|Cuis 1.10V at 250C. The equilibrium constant for Zn+Cu2+(aq)→Zn2+(aq)+Cu the cell reaction is of the order of :
A
10−37
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B
1037
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C
10−17
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D
1017
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Solution
The correct option is C1037 The standard emf of cell E0cell=1.10V. The expression for the equilibrium constant is E0cell=0.0592nlogK. Substitute values in the above expression. 1.10V=0.05922logKlogK=37K=1×1037.