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(d) When 120 mg of naphthalene (C10H8 (S) was burnt in a bomb calorimeter the temperature rose from 25C by 3.05C. The following A, H

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(d) When 120 mg of naphthalene (C10H8 (S) was burnt in a bomb calorimeter the temperature rose from 25C by 3.05C. The following A, H (298K) values, all in kJ mollare known Table 1 Compound AFH/kJ mol-1 C10H8 (s) +78.5 CO2 (9) -393.5 H20 (1) -285.8 From data in table 1, calculate: (1) 4,H and A,U for the combustion reaction of naphthalene, assume all gases follow ideal gas behavior. (ii) Calculate the number of moles of naphthalene in the experiment. (iii) Amount of heat released by the number of moles calculated in part (d) (ii) (iv) Calculate the calorimeter constant (amount of heat to raise temperature by 1 K), otherwise called heat capacity. (12 marks)

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