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Question

$$KMnO_4$$ reacts with $$H_2O_2$$ in an acidic medium. The number of moles of oxygen produced per mole of $$KMnO_4$$ is?


A
2.5
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B
5
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C
1.25
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D
2
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Solution

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

$$2KMnO_4+5H_2O_2+3H_2SO_4\rightarrow 5O_2+2MnSO_4+K_2SO_4+8H_2O$$

If we divide throughout by 2, the number of moles of Oxygen produced per mole of $$KMnO_4$$ will be 2.5.

Chemistry

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