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In acidic medium, potassium permanganate oxidises oxalic acid to
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Verified Answer
The correct answer is:
carbon dioxide
In acidic medium, oxalic acid is oxidised to $\mathrm{CO}_{2}$ (carbon dioxide) by $\mathrm{KMnO}_{4}$.
$$
\begin{aligned}
5(\mathrm{COOH})_{2}+2 \mathrm{KMnO}_{4}+3 \mathrm{H}_{2} \mathrm{SO}_{4} & \longrightarrow \\
\mathrm{K}_{2} \mathrm{SO}_{4}+2 \mathrm{MnSO}_{4}+10 \mathrm{CO}_{2}+8 \mathrm{H}_{2} \mathrm{O}
\end{aligned}
$$
$$
\begin{aligned}
5(\mathrm{COOH})_{2}+2 \mathrm{KMnO}_{4}+3 \mathrm{H}_{2} \mathrm{SO}_{4} & \longrightarrow \\
\mathrm{K}_{2} \mathrm{SO}_{4}+2 \mathrm{MnSO}_{4}+10 \mathrm{CO}_{2}+8 \mathrm{H}_{2} \mathrm{O}
\end{aligned}
$$
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