Question

What happens when $H_{3}P{O}_3$ is heated?

Answer 1

Heating of $H_{3}P{O}_3$

$H_{3}P{O}_3$ when heated, disproportionate to give orthophosphoric acid (or phosphoric acid) and phosphine.


$+3$ $-3$ $+5$
$H_{3}P{O}_3$ $\stackrel{\Delta }{\to }$ $P{H}_3$ + $H_{3}P{O}_4$Orthophosphorous Phosphine Orthophosphoric