:For the reaction
C2H4(g)+3O2(g)→2CO2(g)+2H2O(l);
ΔE = −1415kJ. The ΔH at 270C is
IfΔE is the heat of reaction for C2H5OH(l)+3O2(g)→2CO2(g)+3H2O(l)at constant volume, the ΔH (Heat of reaction at constant pressure) at constant temperature is:
For the reaction C2H4(g)+3O2(g)→2CO2(g)+2H2O(l), the difference between enthalpy change and internal energy change is: