Question

Why nitric acid shows oxidizing agent in dil and concentrated medium?

Answer 1

Nitric acid is a good oxidising agent because in nitric acid (HNO3) oxidation state of nitrogen is +5.

Nitrogen can decrease its oxidation state from maximum value that is why it is a strong oxidising agent.
Hope it will help you

Answer 2

nitric acid is a good oxidizing agent because it in nitric acid ( HNO3 )Oxidation state of an is + 5
nitrogen can decrease in oxidation state from maximum value that is why it is a strong oxidizing agent