Question
How is carbon dioxide prepared? Enlist its important uses
Solution
Preparation:
(i) In the laboratory, it is prepared by the action of dilute hydrochloric acid on carbonates such as CaCO3.
(ii) It can be prepared by burning carbon, a hydrocarbon or carbon monoxide in excess of air.
(iii) On industrial scale, it is obtained as a byproduct in some industrial processes such as in the manufacture of lime, alcohol, etc.
Uses. It is used:
(i) in the preparation of aerated waters like soda water,
(ii) in the manufacture of washing soda by Solvay’s process,
(iii) as a fire extinguisher because it is non-of combination.
