Q27 / 180 · KCET 2015 · Chemistry

On heating potassium permanganate, one of the following compound is not obtained:

A
\( \mathrm{O}_{2} \)
Correct answer
B
\( \mathrm{MnO} \)
C
\( \mathrm{MnO}_{2} \)
D
\( \mathrm{K}_{2} \mathrm{MnO}_{4} \)

Solution

Heating of potassium permanganate salt at \( 513 \mathrm{~K} \)
\( 2 \mathrm{KMnO}_{4}^{-}->\mathrm{K}_{2} \mathrm{MnO}_{4}+\mathrm{MnO}_{2}+\mathrm{O}_{2} \)
Hence, on heating of potassium permanganate, MnO will not be obtain.

Hence, the correct answer is option: 'B'.

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