1.397 g sample of thymol, C 10 H 14 O (s), is burned. The temperature increase is 11.23°C, and the heat capacity of bomb is 4.68 kJ/°C. What is the heat of combustion of thymol, in kJ/mol C 10 H 14 O?

Answer 1

∆H = 4.68 kJ/º x 11.23º = 52.56 kJ

moles of thymol = 1.397 g x 1 mol / 150 g = 0.009313 moles

Heat of combustion, in kJ/mole = 52.56 kJ / 0.009313 mols = 5644 kJ/mole