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AP EAMCET20224 Jul 2022Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

In the reaction of phosphorous with conc. HNO 3 , the oxidized and reduced products respectively are

Options

  1. AH 3 PO 4 , NO 2
  2. BH 3 PO 2 , NO
  3. CH 3 PO 3 , N 2 O
  4. DHPO 3 , NO

Correct answer

A. H 3 PO 4 , NO 2

Step-by-step solution

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. P 4   +   20   HNO 3 → 4 H 3 PO 4 + 20 NO 2 + 4 H 2 O

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