Question

Indicate the type of the following reaction :

${\mathrm{CaCO}}_3\to \mathrm{CaO}+{\mathrm{CO}}_2$

Answer 1

$\underset{\mathrm{Calcium}\mathrm{carbonate}}{{\mathrm{CaCO}}_3}\to \underset{\mathrm{Calcium}\mathrm{oxide}}{\mathrm{CaO}}+\underset{\mathrm{Carbon}\mathrm{dioxide}}{{\mathrm{CO}}_2}$

• Calcium carbonate is decomposing to give Calcium oxide and Carbon dioxide.
• This is an example of a decomposition reaction.

Decomposition reaction- A decomposition reaction can be defined as a chemical reaction in which one reactant breaks down into two or more products.

Hence, the answer is a decomposition reaction.