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The temperature coefficient of a cell wh...

The temperature coefficient of a cell whose operation is based on the reaction:
`Pb_(s) + HgCl_(2(aq.)) rarr PbCl_(2(aq.)) + Hg_(l)`
os `-1.5 xx 10^(-4)VK^(-1)`. The heat of rection at `25^(@)C` is (in `kJ mol^(-1)`) (Given `E = 0.03 V`):

A

`8.4`

B

`16.4`

C

`14.41`

D

`4.5`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaH = nF[T[(deltaE)/(deltaT)]_(P)-E]`,
`:. DeltaH = 2 xx 96500[-1.5 xx 10^(-4)] xx 298 - 0.03]`
`= -14417.1 J`
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