Which of the following acts as reducing agent and why ? `H_3 PO_3` or `H_3 PO_4`.

Assign the possible reason for the following:- H_3PO_2 act as a good reducing agent while H_3PO_4 does not.

Which will act as better reducing agent, H_(3)PO_(2) or H_(3)PO_(4) ?

Account for the following. H_(3)PO_(2) is a stronger reducing agent than H_(3)PO_(3) .

How many of the following species have reducing properties ? NH_(3),PH_(3),H_(3)PO_2,H_(3)PO_3,H_(3)PO_(4),LiA//H_(4),BH_3

H_3PO_3 acts as a reducing agent but H_3PO_4 does not. Why?

Give reasons for the following: H_(3)PO_(2) is a stronger reducing agent than H_(3)PO_(3)

Why does H_(3)PO_(2) behave as reducing agent?

Why does H_3PO_3 act as a reducing agent but H_3PO_4 does not?