題組內容

22. Calcium carbonate reacts with hydrochloric acid.

CaCO₃(s) + 2HCl(aq) → CaCl₂(aq) + H₂O(l) + CO₂(g)

22c. Suggest the relationship that points A, B and C (in 22b) show between the concentration of the acid and the rate of reaction. [1 mark]