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Why does the sedimentary rock limestone react with HClHCl acid?

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Answered Jan 19Geography
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Dr. Badi MExperienced Academic and dedicated tutor for all levels.

Limestone and hydrochloric acid has metathesis ( Double decomposition) reaction: the equation is CaCO3 + 2HCl = CaCl2 + CO2 ↑ + H2O, solid calcium carbonate gradually dissolved and disappeared, and bubble generation. An aqueous solution of calcium chloride is formed with the release of carbon dioxide gas.

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