Question

Heating white phosphorus with conc. NaOH solution gives mainly ______.

Options

• Na₃P and H₂O

• H₃PO and NaH

• P(OH)₃ and NaH₂PO₄

• PH₃ and NaH₂PO₂

Answer 1

Heating white phosphorus with conc. NaOH solution gives mainly PH₃ and NaH₂PO₂.

Explanation:

\[\ce{P4 + 3NaOH + 3H2O -> 3NaH2PO2 + PH3}\]