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Ram malik
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Asked: 2021-12-06T09:58:12+00:00 In:

A dil. ferrous sulphate (FeSO₄) solution was added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation?

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Poll Results

80%(A) potassium permanganate is an oxidising agent, it oxidises FeSO₄. ( 4 voters )
20%(B) FeSO₄ acts as an oxidising agent and oxidises potassium permanganate ( 1 voter )
0%(C) The colour disappears due to dilution; no reaction is involved.
0%(D) potassium permanganate (KMnO₄) is unstable compound & decomposes in presence of ferrous sulphate to a colourless compound.
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You must know that – when, a dil. FeSO₄ solution was slowly added to the beaker which containing acidified solution of permanganate. The light purple colour of the solution of KMnO₄ fades and at last it, disappears. The reason behind it, as it is because KMnO₄ is relatively an unstable compound, it tends to decompose in the presence of ferrous sulphate & changes the colour of the solution (from purple to colourless).

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    1 Answer

    1. (A) potassium permanganate is an oxidising agent, it oxidises FeSO₄.

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