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Question

In a reaction, 4 mol of electrons are transferred to one mol of HNO3 when it acts as an oxidant. The possible reduction product is :

A
0.5molN2
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B
0.5molN2O
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C
1molNO2
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D
1molNH3
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Solution

The correct option is B 0.5molN2O
As it accepts 4 mol of electrons, oxidation state of N in product is 54=1. Therefore, product is N2O, where oxidation state of N is +1.

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