The enthalpy of combustion for octane (C8H18(l)), a key component of gasoline, is –5074 kJ/mol. The reaction equation is: C8H18(l) + 12.5O2(g) 8CO2(g) + 9H2O(g).What is the Hf for this reaction?16CO2(g) + 18H2O(g) 2C8H18(l) + 25O2(g) kJ