Question

Which gas decolourises potassium permanganate solution?

Answer 1

Answer:

Sulphur dioxide can be decolorized Potassium permanganate solution.

Explanation:

Potassium permanganate(KMnO4) 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.

The colour change from purple to transparent(colourless).

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