What should the classification of the chemical reaction below be?C8H18 + O2 --> CO2 + H2O

The chemical reaction given is C8H18 + O2 --> CO2 + H2O. This is a combustion reaction.

Here's why:

1. Identify the reactants and products: The reactants are C8H18 and O2, and the products are CO2 and H2O.

2. Look at the form of the reaction: Combustion reactions generally have the form of a hydrocarbon reacting with oxygen to produce carbon dioxide and water.

3. Confirm the reaction type: In this case, C8H18 is the hydrocarbon reacting with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O), which fits the form of a combustion reaction.

So, the classification of the given chemical reaction is combustion.