In the titration of $\mathrm{KMnO}_{4}$ with oxalic acid in acidic medium, $\mathrm{KMnO}_{4}$ acts

Question

In the titration of $\mathrm{KMnO}_{4}$ with oxalic acid in acidic medium, $\mathrm{KMnO}_{4}$ acts as\

Professor PC Thomas Classes · Answer

(a) : $\mathrm{KMnO}_{4}$ in acidic medium acts as oxidising agent.\ $2 \mathrm{KMnO}_{4}+3 \mathrm{H}_{2} \mathrm{SO}_{4} ightarrow \mathrm{~K}_{2} \mathrm{SO}_{4}+2 \mathrm{MnSO}_{4}+3 \mathrm{H}_{2} \mathrm{O}+5[\mathrm{O}]$ or\ $\mathrm{MnO}_{4}^{-}+8 \mathrm{H}^{+}+5 e^{-} ightarrow \mathrm{Mn}^{2+}+4 \mathrm{H}_{2} \mathrm{O}$\