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Assertion: The cell potential of mercury...

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

A

If both assertion and reason are true, and reason is the true explanation of the assertion

B

if both assertion and reason are true, but reason is not the true explanation of the 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:
B
Correct explanation. The cell reaction, `Zn+HgOtoZnO+Hg` does not involve any ion whose concentration may change (`OH^(-)` ions consumed in one half reaction are produced in the second half reaction).
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