Question

What type of reaction is shown below?

CaCO3(s) → Cao(s) + CO2(g)
A. Decomposition
B. Single-displacement
C. Combustion
D. Double-displacement

Answer 1

The reaction shown: CaCO3(s) → CaO(s) + CO2(g) is an example of a decomposition reaction. In this reaction, calcium carbonate decomposes into calcium oxide and carbon dioxide gas.

Step-by-step explanation:

The reaction shown: CaCO3(s) → CaO(s) + CO2(g) is an example of a decomposition reaction. In a decomposition reaction, a compound breaks down into two or more simpler substances.

In this case, calcium carbonate (CaCO3) decomposes into calcium oxide (CaO) and carbon dioxide (CO2) gas.

This reaction can be classified as a decomposition reaction regardless of whether one or more of the products are still compounds.