Abstract
Liquid systems which have strong non-idealities, as seen from their thermodynamic properties, often show evidence of these interactions in the solid-liquid phase diagrams. This suggests that some of the structures present in the solid state can persist in the solution state, on a time average, up to temperatures much higher than the melting point. Volumes and heat capacities of typical systems were either taken from the literature or measured to illustrate this correlation with the phase diagrams. With mixtures of aprotic solvents which show nearly-ideal simple eutectic phase diagrams, the properties of the solutions are also nearly ideal. Examples of systems investigated which show strong non-idealities are ionic surfactant solutions, alcohol-water mixtures, chloroform-triethylamine mixtures and lithium salts in aprotic solvents.
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Paper written in the honor of Loren Hepler on the occasion of his retirement.
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Perron, G., Couture, L. & Desnoyers, J.E. Correlation of the volumes and heat capacities of solutions with their solid-liquid phase diagrams. J Solution Chem 21, 433–443 (1992). https://doi.org/10.1007/BF00649697
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DOI: https://doi.org/10.1007/BF00649697