Question:
Metal.
Metal.
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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: Jan 13, 2026
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Solution and Explanation
When an acid reacts with a metal, a salt and hydrogen gas are produced. For example, when zinc (Zn) reacts with hydrochloric acid (HCl), zinc chloride (ZnCl2) and hydrogen gas (H2) are formed. The chemical equation is:
\[
Zn (s) + 2HCl (aq) \rightarrow ZnCl_2 (aq) + H_2 (g)
\]
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