Abstract
The thermodynamic properties of water and alcohols of the methanol series on their coexistence curves (CCs) are analyzed. The main attention is focused on the behavior of their specific volumes per molecule and the evaporation heats. We show that the special normalization of these quantities and standard normalization of temperature leads to the similarity of their temperature dependencies on their CCs. And what is more, they are similar to the temperature dependencies for argon. It means that the behavior of the specific volume and the evaporation heat are determined by the averaged interparticle potentials which have the argon-like structure. Small deviations from argon-like dependence are carefully studied. We suppose that these small deviations are caused by the weak angular correlations created by H-bond interactions and should be connected with the main characteristics of H-bond network that is the averaged number of H-bonds per molecule. A method for determination of the last is developed.
Published Version
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