The structure of ethylene is H2C = CH2. Estimate the enthalpy of reaction when 1 kmol of ethylene is completely oxidised. Compare the value obtained with the tabulated value of -1323.2 MJ/kmol. Give reasons for the difference between the values.
Neglecting dissociation, find the temperature reached after constant pressure combustion of ethylene with 50% excess air if the initial temperature of the reactants is 400 K. The specific heat at constant pressure of ethylene is approximately 1.71 kJ/kg K over the temperature range of the reactants.