Question

$H_{3}P{O}_2$ is a stronger reducing agent than $H_{3}P{O}_3$. Give reasons.

Answer 1

1) Reducing agents are those molecules which can donate electrons.

2) The donating elctrons are hydrogen atoms which are bonded to phosphorus atom.

3) In case of $H_{3}P{O}_2$ there are two hydrogen bonded to$P$ atom

but in case of $H_{3}P{O}_3$ there are only one hydrogen bonded to $P$atom

has more donating electrons than .

4)Therefore ,$H_{3}P{O}_2$ is stronger reducing agent than $H_{3}P{O}_3$.