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The standard emf for the cell cell react...

The standard emf for the cell cell reaction ` Zn + Cu^(2+) rarr Zn^(2+) + Cu ` is 1.10 volt at ` 25^@ C`. The emf for the cell reaction when ` 0.1 M Cu^(2+)` and ` 0.1 M ZN^(2+)` solutions are used at `25^@ =C` is .

A

`1.10` volt

B

`0.110` volt

C

`-1.10` volt

D

`-0.110` volt

Text Solution

Verified by Experts

The correct Answer is:
A
`E_("cell")= E_("cell")^(@) -(0.0591)/(n)"log" ([Zn^(2+)])/([cu^(2+)])`
`= 1.10- (0.0591)/(2) log = 1.10 V`
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