Chemistry - Electrochemistry Question with Solution | TestHub

A mercury battery is a primary dry cell.

The anode consists of zinc amalgamated with mercury, $\text{Zn(Hg)}$.

The cathode is a paste of $\text{HgO}$ and carbon, where $\text{HgO}$ is reduced to $\text{Hg}$ during the operation of the cell.

The electrolyte is a paste of $\text{KOH}$ and $\text{ZnO}$. Since $\text{KOH}$ is a strong base, the electrolyte is strongly alkaline, not acidic.

Therefore, the statement that the electrolyte is strongly acidic is incorrect.

Answer: The electrolyte is strongly acidic.