The oxidation state of manganese in the product obtained in a...

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.

$2{KMnO}_{4} + 3{H}_{2}{O}_{2}\overset{basicmedium}{⟶}\overset{+ 4}{2{MnO}_{2}} + 3{O}_{2} + 2{H}_{2}O + 2KOH$

The oxidation state of $Mn\text{in}{MnO}_{2}$ is $+ 4 .$