In a standard commercial mercury cell (often used in low-current devices like hearing aids), what is — Electrochemistry Chemistry Question

💡 Solution & Explanation

The anode in a mercury cell consists of a Zinc-Mercury amalgam ($Zn(Hg)$). During discharge, zinc undergoes oxidation in the basic medium (provided by $KOH/ZnO$ paste) according to the half-reaction: $Zn(Hg) + 2OH^- \rightarrow ZnO(s) + H_2O + 2e^-$. Thus, Zinc oxide ($ZnO$) is the solid product formed at the anode.