Chemistry - Electrochemistry Question with Solution | TestHub

In electrolytic purification cathode is of pure metal and anode is of impure metal. At anode: $\mathrm{M}\to {\mathrm{M}}^{\mathrm{n}+}+\mathrm{n}\overline{\mathrm{e}}$ At cathode: ${\mathrm{M}}^{\mathrm{n}+}+\mathrm{n}\overline{\mathrm{e}}\to \mathrm{M}$. The pure metal is thus deposited at cathode.