Practice question

Question

At 298 K, the bond dissociation energies of C–H, C–C and C=C are 415, 344 and 615 kJ mol ⁻¹ , respectively. The enthalpy of atomization of carbon is 717 kJ mol ⁻¹ and that of hydrogen is 218 kJ mol ⁻¹ . The heat of formation of naphthalene at 298 K is ______ kJ mol ⁻¹ .