Assertion: The cell potential of a mercury ce | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(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

Vedclass · Accepted Answer

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

Vedclass · Answer

(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 $ZnO$.

Similar Questions

Provide basic information on batteries.

Explain the symbolic representation of a galvanic cell (electrochemical cell) with a suitable example.

$A$ concentrated solution of lead nitrate in water can be stored in

Saturated solution of $KNO_3$ is used to make salt bridge because

Vedclass Test Series

Exam Paper Generator

Online Exam Module

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 $ZnO$.