Question

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 1

Correct Answer - C
`undersetunderset(2x=-4)(2x+4=0)(N_(2)H_(4)tounderset((2y))(2N)+10e^(-)`
`underset(y=3)(because2y-(-4)=10)`