Question

Carbonate.

Hint:

Acid-base reactions always produce salt and water. Acids reacting with metals or carbonates can also produce hydrogen gas or carbon dioxide.

Answer 1

When an acid reacts with a carbonate, a salt, carbon dioxide (CO₂), and water are produced. For example, when hydrochloric acid (HCl) reacts with sodium carbonate (Na₂CO₃), sodium chloride (NaCl), carbon dioxide (CO₂), and water (H₂O) are formed. The chemical equation is: \[ Na_2CO_3 (aq) + 2HCl (aq) \rightarrow 2NaCl (aq) + CO_2 (g) + H_2O (l) \]