Which of the following statements regarding a | vedclass

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

Question

(C) Step $1$: $A$ mercury battery is a primary cell that provides a constant voltage.Step $2$: It uses a $Zn-Hg$ amalgam as the anode and $HgO$ mixed

Vedclass · Accepted Answer

The electrolyte is strongly acidic.

Vedclass · Answer

(C) Step $1$: $A$ mercury battery is a primary cell that provides a constant voltage.Step $2$: It uses a $Zn-Hg$ amalgam as the anode and $HgO$ mixed with carbon as the cathode.Step $3$: The electrolyte used is a paste of $KOH$ and $ZnO$, which is strongly alkaline, not acidic.Step $4$: The cell reaction at the cathode is $HgO(s) + H_2O(l) + 2e^- \rightarrow Hg(l) + 2OH^-(aq)$, where $HgO$ is reduced to $Hg$.Step $5$: Since the electrolyte is alkaline, statement $(c)$ is incorrect.

Which of the following statements regarding a mercury battery is $NOT$ true?

Similar Questions

The standard free energy change $(\Delta G^{\circ})$ for the following reaction (in $kJ$) at $25^{\circ} C$ is $3 Ca_{(s)} + 2 Au^{3+}(aq, 1 M) \rightarrow 3 Ca^{2+}(aq, 1 M) + 2 Au_{(s)}$ (given: $E^{\circ}_{Au^{3+}/Au} = +1.50 \ V, E^{\circ}_{Ca^{2+}/Ca} = -2.87 \ V, 1 \ F = 96500 \ C \ mol^{-1}$)

In a galvanic cell,the electrons flow from:

Which of the following reactions occurs at the cathode during the charging of a lead storage battery?

Which of the following statements is correct? $A$ galvanic cell converts:

Consider the galvanic cell: $A_{(s)} | A_{(aq)}^{+2} || B_{(aq)}^{+} | B_{(s)}$. If the $EMF$ of the cell is positive,identify the correct cell reaction from the following.

Vedclass Test Series

Exam Paper Generator

Online Exam Module