what is the reaction of acidified permanganate ion with SO₂?

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Solution

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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Q. Which of the following is the correct representation of the reaction of acidified permanganate solution with sulphurous acid?

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