Calculate the standard enthalpy of formation of naphthalene

Question

Naphthalene (C₁₀H₈) is a solid aromatic compound often sold as mothballs. The complete combustion of this substance to yield CO₂(g) and H₂O (l) at 25^oC yields 5154 kj/mol .

• Write balanced equation for the formation of naphthalene from the elements
• Write balanced equation for the combustion of naphthalene:
• Calculate the standard enthalpy of formation of naphthalene.