Question

In each redox reaction identify the element undergoing oxidation and the element undergoing reduction.

4NH3(g)+5O2(g)⟶4NO(g)+6H2O(g)

In each redox reaction identify the element undergoing oxidation and the element undergoing reduction.

O is oxidized, N is reduced

N is oxidized, O is reduced

N is oxidized, N is reduced

O is oxidized, O is reduced

2NO(g)+O2(g)⟶2NO2(g)

O is oxidized, N is reduced

N is oxidized, O is reduced

N is oxidized, N is reduced

O is oxidized, O is reduced

3NO2(g)+H2O(l)→2HNO3(aq)+NO(g)

O is oxidized, N is reduced

N is oxidized, O is reduced

N is oxidized, N is reduced

O is oxidized, O is reduced

Answer 1

1. Here oxidation of nitrogen occurs from 3- to 2-

And, reduction of oxygen occurs from 2- to 0

Correct answer : N is oxidized ,O is reduced

2. Here oxidation number of N increases from 0 to 2+, so it is oxidised

And, oxidation no of O decreases from 0 to 2- ,so it is reduced

Correct answer : N is oxidized, O is reduced

3. Here, two of the NO2 are oxidized to HNO3 and one is reduced to NO. So N is both oxidized and reduced.

Correct answer : N is oxidized , N is reduced