Question: what is the standard enthalpy change for the combustion of gaseous propylene c3h6?
Answer: Chemistry - Combustion The standard enthalpies of formation of gaseous propylene (C3H6) and propane (C3H8) are +20.4kJ/mol and -103.8 kJ/mol. Their respective combustion reactions may be written as follows, where one mole of either gas is consumed by oxyen to yield carbon dioxide and water.