Question

What happens when-

(i) White phosphorus is heated with concentrated NaOH solution in an inert atmosphere of CO₂.

(ii) PCl₅ is heated.

(iii) iodine is treated with conc. HNO₃?

Answer 1

(i) P₄ + 3NaOH + 3H₂O → PH₃ + 3NaH₂PO₂

(ii) PCl₅ \(\overset{Heat}{\rightarrow}\) PCl₃ + PCl₂

(iii) I₂ + 10HNO₂ (conc. ) → 2HIO₃ + 10NO₂ + 4H₂O