Question

When $PC{l}_3$ reacts with sulphuric acid, sulphuryl chloride is formed as the final product. This shows that sulphuric acid ___________.

• A. has two hydroxyl groups in its structure.
• B. is a derivative of sulphur dioxide.
• C. is a dibasic acid.
• D. has greater affinity for water.

Answer 1

The correct option is A has two hydroxyl groups in its structure.

When $PC{l}_3$ reacts with sulphuric acid, sulphuryl chloride is formed as the final product. This shows that sulphuric acid has two hydroxyl groups in its structure.

$2PC{l}_3+3HO.S{O}_2.OH\to \underset{sulphurylchloride}{3Cl.S{O}_2.Cl}+2H_{3}P{O}_3$