Assertion: The cell potential of a mercury ce | vedclass

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(B) The cell reaction is: $Zn_{(s)} + HgO_{(s)} 	o ZnO_{(s)} + Hg_{(l)}$.The cell potential remains constant during its life because the overall reac

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If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

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(B) The cell reaction is: $Zn_{(s)} + HgO_{(s)} 	o ZnO_{(s)} + Hg_{(l)}$.The cell potential remains constant during its life because the overall reaction does not involve any ions in the solution whose concentration changes during its operation.The electrolyte used in a mercury cell is a paste of $KOH$ and $ZnO$,which is a correct statement,but it does not explain why the cell potential remains constant. The constancy of the potential is due to the fact that the concentration of the electrolyte does not change.

Assertion: The cell potential of a mercury cell is $1.35 \ V$,which remains constant.
Reason: In a mercury cell,the electrolyte is a paste of $KOH$ and $ZnO$.

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Assertion: The cell potential of a mercury cell is $1.35 \ V$,which remains constant.Reason: In a mercury cell,the electrolyte is a paste of $KOH$ and $ZnO$.