Abstract
IN a recent paper1, Benninga and Scott have pointed out that an adequate theory of liquids must account for the approximate identity, EV = constant. E is defined as being equal to the difference between the internal energy of the substance in the perfect gas state and in the liquid state at a given temperature, and will be identified with the potential energy between the molecules: V is the molar volume of the liquid. We wish to point out that this relationship can be made a direct consequence of the simplest form of ‘hole’ theory. Although only the case of spherical molecules of a single species will be considered here, it is intended that a treatment generalized to include the case of mixtures of non-spherical molecules will be published elsewhere in the near future.
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References
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KING, M., STRICKLAND-CONSTABLE, R. Relation between the Volume of a Liquid and its Internal Energy. Nature 178, 275 (1956). https://doi.org/10.1038/178275a0
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DOI: https://doi.org/10.1038/178275a0
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