QJEEM22Che8c2: JEE Main 2022 Chemistry - Class 11 JEEM22Che8c2 Solution: In the titration of KMnO 4 and oxalic acid in acidic medium,…

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In the titration of ${KMnO}_{4}$ and oxalic acid in acidic medium, the change in oxidation number of carbon at the end point is ___________.

Accepted Answer

16 \mathrm{H}^{+}+2 \mathrm{MnO}_{4}^{-}+5 \mathrm{C}_{2} \mathrm{O}_{4}^{2-} \rightarrow 10 \mathrm{CO}_{2}+2 \mathrm{Mn}^{2+}+8 \mathrm{H}_{2} \mathrm{O}

During titration of oxalic acid by

\mathrm{KMnO}_{4}

, oxalic acid converts into

\mathrm{CO}_{2}

.

\therefore

Change in oxidation state of carbon

=1

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