Question:

Carbonate.

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Acid-base reactions always produce salt and water. Acids reacting with metals or carbonates can also produce hydrogen gas or carbon dioxide.
Updated On: May 19, 2025
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Solution and Explanation

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: \[ Na_2CO_3 (aq) + 2HCl (aq) \rightarrow 2NaCl (aq) + CO_2 (g) + H_2O (l) \]
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