Answer :

Potassium permanganate is prepared by reacting MnO2 with an alkali metal hydroxide in the presence of an oxidising agent. The reaction takes place via the following steps-


K2MnO4 (A) is dark green precipitate which undergoes disproportionation reaction to form permanganate and manganese oxide


In acidic solution-



In a neutral medium-



(A) MnO2- (B) MnO4- (C) MnO2 (D) Mn2+


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