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Chlorination

" KMnO4 is k...

Question

" $K M n O_{4}$ is kept in dark bottles because $K M n O_{4}$ is photosensative."
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Solution

Under sunlight, permanganate solution will decompose to give $M n O_{2}$ and $O_{2}$ .
$2 K M n O_{4} (a q) \to K_{2} M n O_{4} (a q) + M n O_{2} (a q) + O_{2} (g)$
Dark bottles are used to cut off sunlight and so, $K M n O_{4}$ are stored in dark bottles.

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