* Carbon dioxide (CO2): This is the primary product of complete combustion. The carbon atoms in the hydrocarbon combine with oxygen to form carbon dioxide.
* Water (H2O): The hydrogen atoms in the hydrocarbon combine with oxygen to form water.
* Heat (energy): Combustion is an exothermic reaction, releasing energy in the form of heat and light.
Here's a simple example:
Combustion of Methane (CH4)
* CH4 + 2O2 → CO2 + 2H2O + Heat
This equation shows that one molecule of methane (CH4) reacts with two molecules of oxygen (O2) to produce one molecule of carbon dioxide (CO2), two molecules of water (H2O), and heat.
Important Note: If there is not enough oxygen for complete combustion, the products can include carbon monoxide (CO), soot (unburnt carbon), and other incomplete combustion products. These are harmful pollutants.
