The complete combustion of C3H7OH (propan-1-ol or propanol) involves reacting it with oxygen (O2) to produce carbon dioxide (CO2), water (H2O), and energy in the form of heat and light.

Here's the balanced chemical equation for the reaction:

2 C3H7OH + 9 O2 → 6 CO2 + 8 H2O + Energy

Explanation:

* C3H7OH: This represents the propanol molecule.

* O2: This is the oxygen gas required for combustion.

* CO2: Carbon dioxide is produced as a result of the carbon atoms in propanol combining with oxygen.

* H2O: Water is produced as a result of the hydrogen atoms in propanol combining with oxygen.

* Energy: This represents the heat and light released during the combustion reaction.

Key points:

* Complete combustion: This means that all the carbon in propanol is converted to carbon dioxide and all the hydrogen is converted to water.

* Balanced equation: The coefficients (numbers in front of the molecules) ensure that the same number of atoms of each element is present on both sides of the equation.

* Exothermic reaction: Combustion is an exothermic reaction, meaning it releases energy into the surroundings.

This reaction is a common example of a hydrocarbon combustion reaction, which is a major source of energy in many applications.