Q. 94.0( 1 Vote )

How is KMnO

Answer :


Pyrolusite is nothing but manganese dioxide (MnO2).


First, MnO2 is oxidised in presence of KOH to give potassium manganite (K2MnO4) which is further reacted with HCl acid to give the desired KMnO4. The reactions involved are:


(i)


(ii)


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