MCQ
In acid solution, the reaction $MnO_4^ - \, \to \,M{n^{2 + }}$ involves
- AOxidation by $3$ electrons
- BReduction by $ 3 $ electrons
- COxidation by $5 $ electrons
- ✓Reduction by $5$ electrons
✓
Answer
Correct option: D.
Reduction by $5$ electrons
(d)$MnO_4^ - \to M{n^{2 + }}$. In this reaction $5{e^ - }$are needed for the reduction of $M{n^{2 + }}$ as:$MnO_4^ - + 5{e^ - } \to M{n^{2 + }}$.
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