For the redox reaction Zn(S)+Cu2+(0.1M)→Zn2+(1M)+Cu(s)taking place in a cell, E0cellis 1.10 volt. Ecellfor the cell will be :(2.303RTF=0.0591)
A
2.14V
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B
1.80V
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C
1.07V
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D
0.82V
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Solution
The correct option is B1.07V The Nernst equation for the emf of the cell is Ecell=E0cell−0.0592nlog⌊Zn2+⌋⌊Cu2+⌋ Substitute values in the above equation. Ecell=1.10V−0.05922log⌊1⌋⌊0.1⌋=1.07V.