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Question

A mole of N2H4 loses 10 mol of electrons to form a new compound Y. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in Y? (There is no change in the oxidation number of hydrogen.)


A

-1

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B

-3

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C

+3

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D

+5

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Solution

The correct option is C

+3


N2H4 has nitrogen in the oxidation state 2.

So, 4=10+2x

x=3


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