For the reaction shown, identify the oxidation half-reaction and the reduction half-reaction. kno3 → kno2 + o2 which pair of half-reactions represents the balanced half-reactions?

- Oxidation half reaction is

and the reduction half reaction is

Explanations:- Oxidation number of nitrogen in nitrate(reactant side) is +5 and in nitrite(product side) it is +3. Here the oxidation number of nitrogen is decreasing from 5 to 3 which is reduction.

As per rules, oxidation number of oxygen in it's compounds is -2 and in elemental form it is 0. So, for the given reaction the oxidation number of oxygen is increasing from -2 to 0 which is oxidation.

The balanced chemical equation is,