The water calorimeter is a thermally insulated metal cup of known thermal properties containing a known mass of water. When a reaction is carried out in the vessel, any heat liberated or absorbed is taken or given up by the water, the heat changes occurring being monitored by means of a thermometer dipped in the water.
Heats of combustion are measured using a bomb calorimeter in which the reaction is carried out in an enclosed, pressurized chamber immersed in the water. Other types of apparatus used to measure specific heats and latent heats include the ice calorimeter and steam calorimeter.
See also thermochemistry.
Related category• HEAT AND THERMODYNAMICS
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