A 1.20g sample of benzoic acid is burned in excess of )2 in a bomb calorimeter immersed in 1300 g of water. The temperature of the water rises from 25 to 30.2 degrees C. The heat of combustion of benzoic acid is -26.4 kJ/g. The heat capacity of water is 4.18. What is the heat capacity of the bomb calorimeter (in J/C)?
Chemistry - DrBob222, Monday, December 3, 2012 at 2:20pm
q = [mass H2O x specific heat H2O x (Tfinal-Tinitial)] + [Ccal x (Tfinal-Tinitial)]
q = 26,400 J/g x 1.20 g = ?
Substitute " for q in the first equation along with the other data and solve for Ccal. q is + for the first equation.