Question

The combustion of one mole of benzene takes place at 298 K and 1 atm. After combustion, CO2(g) and H2O (1) are produced and 3267.0 kJ of heat is liberated. Calculate the standard enthalpy of formation, ∆f H of benzene. Standard enthalpies of formation of CO2(g) and H2O(l) are –393.5 kJ mol–1 and – 285.83 kJ mol–1 respectively.

The enthalpies of all elements in their standard states are: