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  • Which one of the following is an example of disproportionation reaction?Option: 1 <img alt="3 \mathrm{MnO}_{4}^{2-}+4 \mathrm{H}^{+} \rightarrow 2 \m

Which one of the following is an example of disproportionation reaction?

Option: 1

3 \mathrm{MnO}_{4}^{2-}+4 \mathrm{H}^{+} \rightarrow 2 \mathrm{MnO}_{4}^{-}+\mathrm{MnO}_{2}+2 \mathrm{H}_{2} \mathrm{O}


Option: 2

\mathrm{MnO}_{4}^{-}+4 \mathrm{H}^{+}+4 e^{-} \rightarrow \mathrm{MnO}_{2}+2 \mathrm{H}_{2} \mathrm{O}


Option: 3

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


Option: 4

8 \mathrm{MnO}_{4}^{-}+3 \mathrm{~S}_{2} \mathrm{O}_{3}^{2-}+\mathrm{H}_{2} \mathrm{O} \rightarrow 8 \mathrm{MnO}_{2}+6 \mathrm{SO}_{4}^{2-}+2 \mathrm{OH}^{-}


Answers (1)

best_answer

In a disproportionation reaction, the same species is oxidised as well as reduced.


Hence, Option (1) is correct.

Posted by

Ritika Jonwal

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