Question

How can carbon - dioxide be
prepared from an acid​

Answer 1

Explanation:

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.

Answer 2

Answer:

How can carbon dioxide be prepared from an acid?

Ans: Metal carbonates react with dilute acids to form salt, water,  and carbon dioxide gas. Thus,  carbon dioxide can be prepared by reacting any metal carbonate with any dilute acid.

Example: Carbon dioxide gas is liberated when sodium carbonate reacts with dilute hydrochloric  acid.

Na2CO3 + 2HCl →2NaCl + H2O + CO2