Question

The gas liberated when a dilute acid reacts with a metallic sulphite is ____________.

• A. Both $A$ and $B$
• B. None of the above
• C. $H_{2}S$
• D. $S{O}_2$

Answer 1

Answer: (D)

When metal sulphite reacts with dilute acid-

$N{a}_{2}S{O}_3+2HCl\to 2NaCl+H_{2}O+S{O}_2$

Option B is correct.