Question

is $Ca(OH)_{2} + CO_{2} \to \ CaCO_{3} + H^{2}O$ a combination reaction? How?

Answer 1

Explanation:

Yes, it is a combination reaction.

Calcium hydroxide or lime water reacts with 'carbon dioxide gas' to form an insoluble milky calcium carbonate of white precipitate and water. The mechanism of reaction of carbon dioxide in aqueous calcium hydroxide is a double displacement reaction.