# What is an example of a combustion reaction?

${C}_{6} {H}_{14} \left(l\right) + \frac{19}{2} {O}_{2} \left(g\right) \rightarrow 6 C {O}_{2} \left(g\right) + 7 {H}_{2} O \left(g\right)$
The products of complete hydrocarbon combustion are always carbon dioxide and water. Sometimes, the fuel can be incompletely combusted to carbon (as soot), and carbon monoxide. What are the oxidation states of $C$ in soot, and in ""^(-)C-=O^+?