Enlist the methods(with chemical equations) to prepare carbon dioxide.

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Solution

At the laboratory level, Carbon dioxide( ${CO}_{2}$ ) is produced whenever an acid reacts with a carbonate.
For example, the reaction of Calcium carbonate( ${CaCO}_{3}$ ) with dilute sulphuric acid results in the formation of carbon dioxide gas.
$\underset{Calcium Carbonate}{{CaCO}_{3} (s)} + \underset{Hydrochloric acid}{2 HCl (aq)} \to \underset{Calcium Chloride}{{CaCl}_{2} (aq)} + \underset{Water}{H_{2} O (l)} + \underset{Carbon dioxide}{{CO}_{2} (g)}$

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