Chemical equations are symbolic representations of chemical reactions in which the reactants and the products are expressed in terms of their respective chemical formulae. The equation in which the number of atoms of all the molecules is equal on both sides of the equation is known as a balanced chemical equation.
Given equation is Ca(OH)2+CO2 → CaCO3 + H2O
The equation is balanced.
Insoluble milky white precipitate of calcium carbonate and water is produced when calcium hydroxide reacts with carbon dioxide gas. The reaction follows a double displacement reaction.