Abstract
THE viscosity of a liquid can usually be represented by η = A.eEvisc./RT, where η is the viscosity; A is a constant; Evisc is the energy of viscosity; R is the gas constant; T is the absolute temperature. In connexion with other work, it was deduced that the energy of viscosity should equal the work of cohesion for unassociated and non-metallic liquids. The work of cohesion has been defined by Harkins1 as the energy required to form a surface in a liquid and is equal to twice the surface energy. Now if both the energy of viscosity and the work of cohesion are expressed as calories per mole, they are nearly equal for unassociated liquids.
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References
Harkins et al., J. Amer. Chem. Soc., 43, 35 (1921).
London, Trans. Farad. Soc., 33, 8 (1937).
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GRUNBERG, L., NISSAN, A. Energy of Viscosity as a Measure of the Cohesion of Liquids. Nature 154, 146 (1944). https://doi.org/10.1038/154146a0
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DOI: https://doi.org/10.1038/154146a0
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