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JEE Main202227 Jun 2022Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Heating white phosphorus with conc. NaOH solution gives mainly

Options

  1. ANa 3 P and H 2 O
  2. BH 3 PO and NaH
  3. CP OH 3 and NaH 2 PO 4
  4. DPH 3 and NaH 2 PO 2

Correct answer

D. PH 3 and NaH 2 PO 2

Step-by-step solution

White phosphorous dissolves in boiling NaOH solution (in a CO 2   atmosphere) to give phosphine, PH 3 . P 4 + 3 NaOH + 3 H 2 O → 3 NaH 2 PO 2 + PH 3

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