Question Detail

CHM 102 Sblock elements Objective Question

Question

What are the products when sodium sulphite (Na₂SO₃) reacts with hydrochloric acid (HCl)?
Options
A NaCl(aq) + H₂SO₄(aq)
B Na₂S(s) + H₂O(l) + Cl₂(g)
C NaCl(aq) + SO₂(g) + H₂O(l)
Correct Answer
D NaHSO₃(aq) + Cl₂(g)
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 23 provides the reaction: 'Na₂SO₃(aq) + 2HCl(aq) → 2NaCl(aq) + SO₂(g) + H₂O(l)'. Sulphur dioxide gas is liberated.

Hint

Recall the reaction of sulphites with acids, which typically produces a specific gas.

Question Info