write the reaction of SO2 with acidified KMnO4 and write the product formed.

Reaction of SO2 with acidified KMnO4:

Potassium permanganate has a purple colour. Sulphur dioxide is a reducing agent. Potassium permanganate is an oxidizing agent. When sulphur dioxide reacts with potassium permanganate the solution decolourizes. Color changes from Purple to transparent (Colourless).

Reason : Potassium permanganate gets reduces by sulphur dioxide.

Reaction: 2KMnO4 + 5SO2 + 2H2O → 2MnSO4 + 2KHSO4 + H2SO4

Product formed: MnSO4

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