KMnO4 reacts ...

Question

$K M n O_{4}$ reacts with $H_{2} O_{2}$ in an acidic medium. The number of moles of oxygen produced per mole of $K M n O_{4}$ is?

2.5

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5

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1.25

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2

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Solution

The correct option is C $2.5$
The overall chemical reaction can be written as:

$2 K M n O_{4} + 5 H_{2} O_{2} + 3 H_{2} S O_{4} \to 5 O_{2} + 2 M n S O_{4} + K_{2} S O_{4} + 8 H_{2} O$

If we divide throughout by 2, the number of moles of Oxygen produced per mole of $K M n O_{4}$ will be 2.5.

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