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AP EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

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

  1. A H3PO4,NO2
  2. B H3PO2,NO
  3. C H3PO3,N2O
  4. D HPO3,NO
Verified Solution

Answer & Solution

Correct Answer

(A) H3PO4,NO2

Step-by-step Solution

Detailed explanation

Concentrated nitric acid oxidises non–metals and their compounds. Phosphorus is oxidised to phosphoric acid and nitric acid is reduced to nitrogen dioxide. The reaction is shown below. P4 + 20 HNO3→4H3PO4+20NO2+4H2O