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  4. In alkaline medium, the reaction of hydrogen peroxide with potassium permanganate produces a compound in which the oxidation state of Mn is

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Q. In alkaline medium, the reaction of hydrogen peroxide with potassium permanganate produces a compound in which the oxidation state of $Mn$ is

KVPYKVPY 2015Redox Reactions

Solution:

In alkaline medium, the reaction of hydrogen peroxide with potassium permanganate produces, manganese oxide,$MnO _{2}$.
$KMnO _{4}+ H _{2} O _{2} \xrightarrow{- OH }Mn O _{2}+ H _{2} O$
Let the oxidation state of $Mn$ in $MnO _{2}$ be $x$.
$x+2(-2)=0$
$x=+4$