The heat of combustion of decahydronaphthalene (C10H18) is -6286 kJ / mol The heat of combustion of

Question:

The heat of combustion of decahydronaphthalene (C10H18) is -6286 kJ / mol The heat of combustion of naphthalene (C10H8) is-5157 kJ / mol. [In both cases CO2(g) and H2O(l) are the products.] Using these data and data in Appendix C, calculate the heat of hydrogenation of naphthalene. Does this value provide any evidence for aromatic character in naphthalene?