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If the temperature coefficient of EMF if...

If the temperature coefficient of `EMF `if `-0.125V K^(-1), DeltaS` for the given cell at `25^(@)C` is `:`
`Fe|Fe^(2+)(aq)||Cd^(2+)(aq)|Cd`

A

`-26.125 k J K^(-1)`

B

`-24.125k J K^(-1)`

C

`-22.125 kJ K^(-1)`

D

`-20.125 k J K^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
b
`n_(cell)=2,((delE)/(deltT))=-0.125 VK ^(-1)`
`DeltaS=nF((delE)/(delT))`
`=2xx96500Cxx-0.125 V K^(-1)`
`=-24125 J K^(-1)`
`=-241.25 kJ K^(-1)`
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