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Assertion:In mercury cell, the cell pote...

Assertion:In mercury cell, the cell potential is approximately 1.35 V Which cell will measure standard electrode and remains constant during its life.
Reason : The overall reaction in mercury cell is represented as `Zn(Hg)+HgO_((s)) to ZnO_((s)) + Hg_((l))`

A

If both assertion and reason are true and reason is the correct explanation of assertion .

B

If both assertion and reason are true but reason is not the correct explanation of assertion .

C

If assertion is true but reason is false .

D

If both assertion and reason are false .

Text Solution

Verified by Experts

The correct Answer is:
A
Overall reaction does not involve any ion in solution whose concentration can change during its life time .
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Why does the cell potential of mercury cell remain constant throughout its life ?

Statement -1 : The volatge of mercury cell remains constant for its life time. Statement -2 : Overall cell reaction does not involve any ion.