Pressure dependence of the heat capacity near the melting point in benzene

Our calculated values of the difference in the heat capacity (CP − CV) decrease with increasing pressure at the constant temperatures studied which predict the observed behavior of benzene in the solid and liquid phases. This indicates that our method of calculating the heat capacity from the molar volume data is satisfactory at various pressures (at constant temperatures) near the melting point in benzene. The heat capacities of some other organic molecular crystals such as naphthalene, anthracene etc. can also be calculated from the molar volume near their melting points.