A dilute ferrous sulphate solution is gradually added to a beaker containing an acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for this observation?

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Chemistry · Chemical Reactions and Equations

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

KMnO4 acts as an oxidizing agent and oxidizes FeSO4.

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Answer 1

KMnO4 is an unstable compound and decomposes spontaneously in the presence of Fe2+ ions.

Answer 2

The colour disappears purely due to dilution; no chemical reaction is involved.

Answer 3

FeSO4 acts as an oxidizing agent and oxidizes KMnO4.

Answer 4

KMnO4 acts as an oxidizing agent and oxidizes FeSO4.

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