When 0.96 g of benzoic acid was combusted, C7H6O2(s) + 15/2O2(g) rightarrow 7CO2

Question

When 0.96 g of benzoic acid was combusted, C7H6O2(s) + 15/2O2(g) rightarrow 7CO2(g) + 3H2O(l), using 10 cm of fuse wire for the electrical ignition, the temperature was increased by 2.41 K. The enthalpy of combustion (Delta Hcomb) of benzoic acid (MW = 122.122 g/mol) is 26,430.0 J/g. After the reaction, 2.0 cm of fuse wire was found unburned. For every centimeter of the fuse wire burned 9.62 Joule of energy was released. Calculate the heat capacity (Kc) of the calorimeter. Assume the initial temperature to be 298 K. Gas constant, R = 8.314 J mol-1 K-1.

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