Question

Which of the following is the anhydride of sulphuric acid?

• A. ${{H}_{2}}{{S}_{2}}{{O}_{7}}$
• B. $S{{O}_{2}}$
• C. ${{H}_{2}}{{S}_{2}}{{O}_{8}}$
• D. $S{{O}_{3}}$

Answer 1

Answer: (D)

$S{{O}_{3}}$

Answer 2

The anhydride of sulphuric acid is sulphur trioxide. ${{H}_{2}}S{{O}_{4}}\xrightarrow{-{{H}_{2}}O}S{{O}_{3}}$
Sot he correct option is (D): SO3