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Acids, Bases and Salts — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceAcids, Bases and Salts2 Marks
Question
Dilute HCl was added to limestone.
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Answer

- When hydrochloric acid is added to limestone, carbon dioxide is liberated. Limestone is calcium carbonate.
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CaCO _3+2 HCl \rightarrow CaCl _2+ CO _2+ H _2 O
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- Carbon dioxide is prepared in the laboratory using these chemicals.

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