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The temperature coefficient of the cell ...

The temperature coefficient of the cell is `((delE)/(delT))_(P)`. Choose the correct statements `(s)`.

A

When `((delE)/(delT))_(P)=0` , then `DeltaH=-nFE`

B

When `((delE)/(delT))_(P)lt0, ` then `|nFE|gt|DeltaH|`

C

When `((delE)/(delT))_(P)gt0`, then `|nFE|lt|DeltaH|` Exothermic reaction

D

When `((delE)/(delT))_(P)=0,` then `|DeltaH|gt|nFE|` Endothermic reaction.

Text Solution

Verified by Experts

The correct Answer is:
a,b,c
`DeltaG=DeltaH+T((delG)/(delt))_(P)`
` DeltaG=-nFE=DeltaH-nFT((delG)/(delT))_(P)`
`implies((delE)/(delT))_(P)=(DeltaH+nFE)/(nF)`
Check for `:((delE)/(delT))=0,gtO,lt0`
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