A 0.1964 g sample of quinone (C6H4O2) is burned in a bomb calorimeter that has a heat capacity of 1.56 kJ/°C.

Question

The temperature of the calorimeter increases by 3.2°C. Calculate the energy of combustion of quinone per gram and per mole.

Answer 1

Principles:

Heat gained by calorimeter = calorimeter heat capacity x increase in temperature. That is what calorimeter heat capacity means.

Heat released by reaction = heat gained by calorimeter

In this case:

Find out heat released by reaction

You know how many g; so find out heat released per g.

Then work out molar mass, and multiply your last answer by that, to get heat released per mole