Combustion of ethene enthalpy Combustion of ethene enthalpy
When the fuels are used in the form of complex mixtures, the heat of combustion is expressed as kJ g-1 or MJ dm-3 Some examples of the heat of combustion for certain compounds are given below Hydrocarbon Heat of Combustion kJ mol-1 kJ g-1 Methane 889 55.6 Ethane 1557 51.9 Propane 2217 50.4 Butane 2874 49.6 Octane 5464 47.9
thermochemical equation for the reaction. Solution: Heat evolved Convert the heat evolved to per mol. = -709 KJ Now the equation: CH 3 NO 2 (l) + ¾O 2 (g) CO 2 (g) + 3/ 2 H 2 O(l) + ½N 2 (g); DH = –709 kJ 28.81C 22.23C 20.03 kJ C 3.044kJ û rxn rxn cal q q C t 32 rxn 3 2 3 2 20.03 kJ 61.04gCHNO