Decolourisation of acidified potassium permanganate occurs when H_2O_2 is added to it. This is due to:

JEE Main Chemistry question

Decolourisation of acidified potassium permanganate occurs when HO is added to it. This is due to:

(A)Oxidation of KMnO
(B)Reduction of KMnOCorrect
(C)Both oxidation and reduction of KMnO
(D)None of the above

Answer: (B)

Solution

KMnO is decolourised because its deep purple Mn is reduced to the pale/near-colourless Mn by HO (which is itself oxidised to O in the process): $2KMnO_4 + 3H_2SO_4 + 5H_2O_2 →

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Question ID VK-137392