Question

Phosphorus has the oxidation state of + 3 in
(a) Phosphorus acid [1994]
(b) Orthophosphoric acid
(c) Hypophosphorus acid
(d) Metaphosphoric acid.

Answer 1

Answer:

ortho phosphoric acid H2PO4 .basicity is 3

Answer 2

Answer:

Option a.

Explanation:

a.H3PO3(PHOSPORIC ACID)

3+x+3(-2)=0

x=+3

b.H3PO4(ORTHOPHOSPORIC ACID)

=+5

c.H3PO2(HYPOPHOSPHOUS ACID)

=+1

d.HPO3(GENERAL FORMULA OF METAPHOSPHORIC ACID)

=+5