| The temperature coefficient of a cell whose operation is based on the reaction |
| \[Pb(s)+HgC{{l}_{2}}(aq)\xrightarrow{{}}PbC{{l}_{2}}(aq)+Hg(l)\] |
| \[{{\left( \frac{dE}{dT} \right)}_{p}}=1.5\times {{10}^{-4}}V/K\,at\,298K\] |
| The change in entropy (in J/K mol) during the operation is: |
A) 8627
B) 57.9
C) 28.95
D) 14.475
Correct Answer: C
Solution :
[c] \[\Delta S=nF{{\left( \frac{dE}{dT} \right)}_{P}}\Rightarrow 2\times 96500\times 1.5\times {{10}^{-4}}\] \[\Rightarrow \] \[28.95\,J/K\,mol\]
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