Question

Balance Ca(OH)2+CO2--->CaCO3+H2O

Answer 1

the equation remains same.... Because It's a balanced equation........Ca(OH)2+CO2=CaCO3+H2O

Answer 2

Explanation:

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.  

Calcium hydroxide + carbon dioxide → Calcium carbonate + water

The equation for the reaction:

$\mathrm{Ca}(\mathrm{OH})_{2}+\mathrm{CO}_{2} \rightarrow \mathrm{CaCO}_{3}+\mathrm{H}_{2} \mathrm{O}$

Both the right (products) and left (reactants) side of the “equation are balanced”.

The balancing of the equation is given in the attachment which is in the below: