Answer
Decomposition
Step-by-step explanation
2CO2(g) → 2CO(g) + O2(g)
The reaction of carbon dioxide to form carbon monoxide and oxygen as shown above is a decomposition reaction.
A decomposition reaction can be defined as a chemical reaction in which one reactant breaks down into two or more products.
In the reaction, a single reactant carbon dioxide breaks down or decomposes to form carbon monoxide and oxygen.