Relations Between Heat Capacities
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In thermodynamics, the heat capacity at constant volume, CV, and the heat capacity at constant pressure, CP, are extensive properties that can be written in dimensions of energy/degree temperature. The corresponding expression for the ratio of specific heat capacities remains the same since the thermodynamic system size-dependent quantities, whether on a per mass or per mole basis, cancel out in the ratio because specific heat capacities are intensive properties.The difference relation allows one to obtain the heat capacity for solids at constant volume which is not readily measured in terms o...
In thermodynamics, the heat capacity at constant volume, CV, and the heat capacity at constant pressure, CP, are extensive properties that can be written in dimensions of energy/degree temperature. The corresponding expression for the ratio of specific heat capacities remains the same since the thermodynamic system size-dependent quantities, whether on a per mass or per mole basis, cancel out in the ratio because specific heat capacities are intensive properties.The difference relation allows one to obtain the heat capacity for solids at constant volume which is not readily measured in terms of quantities that are more easily measured. The ratio relation allows one to express the isentropic compressibility in terms of the heat capacity ratio.
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