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Q.

When ${KMnO}_{4}$ is heated then which of the following compound is formed?

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a

${MnO}_{2} + MnO$

b

No change

c

$K_{2} {MnO}_{4} + {MnO}_{2}$

d

$K_{2} {MnO}_{4} + MnO$

answer is A.

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Detailed Solution

Manganese dioxide is the byproduct of the reaction when potassium permanganate is heated.

The following reaction is obtained when the potassium permanganate is heated.

$2 {KMnO}_{4} \to K_{2} {MnO}_{4} + {MnO}_{2} + O_{2}$

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