# Calorimetry - Calorimetry Heat Capacity of the Calorimeter...

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Calorimetry Heat Capacity of the Calorimeter Concepts In calorimetry it is often desirable to know the heat capacity of the calorimeter itself rather than the heat capacity of the entire calorimeter system (calorimeter and water). The heat ( q ) released by a reaction or process is absorbed by the calorimeter and any substances in the calorimeter. If the only other substance in the calorimeter is water, the following energy balance exists: q = q cal + q w where q cal is the heat flow for the calorimeter and q w is the heat flow for the water. Both of these individual heat flows can be related to the heat capacity and temperature change for the substance. q cal = C cal Δ T q w = C w Δ T where C cal is the heat capacity of the calorimeter and C w is the heat capacity of the water. Because the water and calorimeter are in thermal equilibrium, they both have the same temperature and thus Δ T is the same for both. The consequence is that the heat capacity of the entire system ( C ) is the sum of the heat capacities for the

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Calorimetry - Calorimetry Heat Capacity of the Calorimeter...

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