Question

In the reaction of phosphorous with conc. HNO3, the oxidized and reduced products respectively are

• A. H3PO4, NO2
• B. H3PO2, NO
• C. H3PO3, N2O
• D. HPO3, NO

Hint:

Phosphorus with conc. HNO3} gives the highest oxidation state product (H3}PO4}).

Answer 1

The Correct Option is A

In reaction with concentrated HNO3}, phosphorus is oxidized to H3}PO4}.
Nitric acid acts as an oxidizing agent and gets reduced to NO2}.