Question

When $PC{l}_3$ is hydrolyzed then oxyacid of phosphorus is formed. Correct statement(s) regarding oxyacid is/are:-

• A. It’s basicity is two
• B. Oxidation state of central element is +3
• C. It is also formed when alcohol reacts with $PC{l}_3$
• D. It can’t act as reducing agent

Answer 1

Answer: (A), (B), (C)

The correct options are
A It’s basicity is two
B Oxidation state of central element is +3
C It is also formed when alcohol reacts with $PC{l}_3$

(A) $PC{l}_3+3H_{2}O\to H_{3}P{O}_3+3HCl$
(B)
(C) $2R-OH+PC{l}_3\to 3R-Cl+H_{3}P{O}_3$
(D) As +3 oxidation state, therefore can reduce to +5 oxidation state