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the standart emf of the cel Fe|Fe^(+2)...

the standart emf of the cel
`Fe|Fe^(+2)(aq)||Cd^(+2)|Cd` is 0.0372 V and temperature coefficient of emf is `-0.125 Vk^(-1)` which is /are correct about the cell (at room temperature)?

A

`-20.125 KJ K^(-1)`

B

`-24.125KJ K^(-1)`

C

`26.125KJ K^(-1)`

D

`-22.125KJ K^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`(dE^(@))/(dT)=(triangleS^(@))/(nF)`
`rArr triangleS^(@)=((dE^@)/(dT)) xx nF`
`=-0.125 xx 2 xx 96500`
`=-24.125 xx KJ K^(-1)`
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