Question

The combustion of toluene has a ΔErxn of −3.91 × 10^3 kJ/mol. When 1.45 g of toluene (C7H8) undergoes combustion in a bomb calorimeter, the temperature rises from 23.10 C to 37.58 C. Find the heat capacity of the bomb calorimeter. Express your answer with three significant figures

Answer 1

- 37.58 given De oan = -3.91 x 10 kilmol 1.95g of tolwene (C7 Hg) initial temperature - 23.10°c final temperature (final initial 07 = (37.58 - 23:10 DT = 14.986 Hent Capacity = c(!) - с. ДТ (1 GHz + 90 760 2 + 4H₂O) DEGAN = -3.91 x103 kJ/mol for 1959 of tolwene q= ? 1.95g of toluene converting into roles. Imol - 928 ? — 1.459 1.45 x Imol = 0.01576 mol cq Hg. 929 q=0.01576x - 3.91 x 108 kJ 9--61.6216 kJ indicates it's lost by to wene and it's gained by Calonmetey so we consider +). C-9 61.6216 kV – 4.255 kJ/°C 14.486