JEE Main202330 Jan 2023Morning ShiftChemistryd and f Block ElementsActual

The number of electrons involved in the reduction of permanganate to manganese dioxide in acidic medium is _____ .

Correct answer

Step-by-step solution

Permanganate is reduced to Manganese dioxide by the following reaction: MnO 4 - + 7 + 4 H + + 3 e - ⟶ Mn + 4 O 2 + 2 H 2 O Here, oxidation no. of manganese was reduced by 3 from reactant to product side. Thus, three electrons are involved.

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