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Q.

The standard EMF for the cell reaction Zn+Cu2Cu+Zn2+ is. 1.1 volt at 25oC. The EMF for the cell reaction, when 0.1 M Cu2+ and 0.1 M Zn2+ solutions are used, at 25oC is

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a

1.10 V

b

0.10 V

c

-1.10 V

d

-0.110 V

answer is A.

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Detailed Solution

Ecell=Ecell0+(0.0591/2)logCu+2/Zn+2

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