Question

Calculate the heat of formation of naphthalene (C10H8) when the standard heat of combustion of naphthalene is -5153.0 kJ/mol at 25oC. Given that heats of formation of CO2 and H2O are -393.5 kJ /mol and -285.85 kJ/mol, respectively. Hint: The combustion occurs according to the following unbalanced chemical equation: C10H8(s) + O2(g) à CO2(g) + H2O(l)

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