Answer:
Acid reacts with limestone (CaCO3) and produces carbon dioxide gas.
Explanation:
Limestone is a basic substance as such it must react with an acid to produce a neutral salt, water and CO2.
In chemistry, a substance is either acidic, basic or neutral. We must ote that an acidic substance will react with a basic substance and most times lead to the production of a neutral substance.
Since limestone is a basic substance, then it must react with an acidic sustance to produce a neutral salt, water and CO2.
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