Question

(e) write balance chemical equations for the preparation of carbon dioxide in laboratory. How the gas is collected?​

Answer 1

Answer:

(a) CaCO_3+2HCl\ →\ CaCl_2+CO_2+H_2OCaCO3+2HCl → CaCl2+CO2+H2O

Explanation:

Carbon dioxide reacts with calcium hydroxide solution to produce a white precipitate of calcium carbonate. Limewater is a solution of calcium hydroxide. If carbon dioxide is bubbled through limewater, the limewater turns milky or cloudy white.

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Answer 2

calcium carbonate + hydrochloric acid → calcium chloride + water + carbon dioxide.

CaCO3+ 2 HCl ⇒ CaCl2 + H2O + CO2

Carbon dioxide is produced whenever an acid reacts with a carbonate. This makes carbon dioxide easy to make in the laboratory. Calcium carbonate and hydrochloric acid are usually used because they are cheap and easy to obtain. Carbon dioxide can be collected over water, as shown in the diagram.

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