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JEE Main202227 Jul 2022Evening ShiftChemistryd and f Block ElementsActual

The oxidation state of manganese in the product obtained in a reaction of potassium permanganate and hydrogen peroxide in basic medium is

Correct answer

4

Step-by-step solution

This KMnO 4 is a powerful oxidizing agent in neutral, acidic, and alkaline medium. The H 2 O 2 is also an oxidizing agent but in the reaction of KMnO 4 with the H 2 O 2 . The H 2 O 2   loses its electron and acts as a reducing agent. In an acidic medium, the MnO 4 - ions involve the addition of 5 electrons and the two peroxide ions give out two electrons. In dilute alkaline medium or in neutral medium MnO 4 - ions involve the addition of 3 electrons. The reaction in basic medium is given below. 2 KMnO 4 + 3 H

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