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

Question

Assertion: The cell potential of mercury cell is 1.35 V, 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 the Reason is the correct explanation of the Assertion (B) If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion (C) If Assertion is true but Reason is false (D) If both Assertion and Reason are false

Tardigrade Admin · Accepted Answer

Zn (l)+ Hg (s) longrightarrow ZnO (s)+ Hg (l) The cell potential remains constant during its life as the overall reaction does not involve any ion in solution whose concentration changes during its life time.

Q. Assertion : The cell potential of mercury cell is $1.35 V$ , which remains constant.
Reason : In mercury cell, the electrolyte is a paste of $K O H$ and $Z n O$ .

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion

If Assertion is true but Reason is false

If both Assertion and Reason are false

$Z n (l) + H g (s) ⟶ Z n O (s) + H g (l)$
The cell potential remains constant during its life as the overall reaction does not involve any ion in solution whose concentration changes during its life time.

Q. 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.