C5h12 C2h4 C8h18 C5h8 C6h14 C4h6 2024. C8h18 = c2h4 + c4h10 is a decomposition reaction where one mole of octane [c 8 h 18] decomposes into two moles of ethylene [c 2 h 4] and one mole of butane [c 4 h 10] Octane (c_8h_18) melting/boiling points are measures of the thermal energy required to break the intermolecular forces (imfs) in a substance;

Direct link to this balanced equation: The combustion reaction calculator will give you the balanced reaction for the combustion of hydrocarbons or c, h, o substances.