# What is this equation balanced: Octane reacts with oxygen to form Carbon dioxide and water?

Dec 16, 2014

This is the combustion reaction for octane, ${C}_{8} {H}_{18}$., a volatile and very flammable alkane that is a component of gasoline.

The balanced chemical reaction is

$2 {C}_{8} {H}_{18} + 25 {O}_{2} \to 16 C {O}_{2} + 18 {H}_{2} O$

Here's a nice diagram of this reaction I've found on a French forum

The chemical reaction described is

${C}_{8} {H}_{18} + 12.5 {O}_{2} \to 8 C {O}_{2} + 9 {H}_{2} O$