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

Mark the false statement.

Which colourless gas evolves,when $NH_4Cl$ reacts with zinc in a dry cell battery?

Which of the following metals can displace copper from a copper sulphate solution?

Standard electrode potentials for a few half cells are mentioned below:
$E^0_{Cu^{2+}/Cu} = 0.34 \ V, E^0_{Zn^{2+}/Zn} = -0.76 \ V$
$E^0_{Ag^{+}/Ag} = 0.80 \ V, E^0_{Mg^{2+}/Mg} = -2.37 \ V$
Which one of the following cells gives the most negative value of $\Delta G^0$?

When a $Cu$ rod is kept in an $AgNO_3$ solution,what is the redox reaction that occurs?

Vedclass Test Series

Exam Paper Generator

Online Exam Module