# When butane burns in an excess of oxygen what are the products?

The products of complete combustion of any hydrocarbon are carbon dioxide and water. For butane, ${C}_{4} {H}_{10}$:
${C}_{4} {H}_{10} \left(g\right) + \frac{13}{2} {O}_{2} \left(g\right) \rightarrow 4 C {O}_{2} \left(g\right) + 5 {H}_{2} O \left(l\right)$