A2.599 g sample of a new organic material is combusted in a bomb calorimeter. the temperature of the calorimeter and its contents increase from 25.25 ∘ c to 29.80 ∘ c. the heat capacity (calorimeter constant) of the calorimeter is 31.71 kj / ∘ c, what is the heat of combustion per gram of the material?

To solve this problem it is necessary to apply the concepts related to thermal transfer given by the thermodynamic definition of heat as a function of mass, specific heat and temperature change.

Mathematically this is equivalent to

Where

m = mass

Specific Heat

Change at temperature

In mass terms (KJ / g) this can be expressed as

Our values are given as

Replacing,

Therefore the heat of combustion per gram on the material is 55.51KJ/g

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