1.

One mole of `N_(2)H_(4)` loses ten moles of electrons to form a new compound `A`. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in `A`? (There is no change in the oxidation state of hydrogen.)A. `+1`B. `-3`C. `+3`D. `+5`

Answer» Correct Answer - C
`(N^(2-))_(2)rarr2N^(a+)+10e`
`:. 2a-[2xx(-2)]=10`
`:. a=+_3`


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