Abstract
The dependence of surface tension of equilibrium spherical drops in the vapor phase on their size at the saturation vapor pressure was studied. The calculation was based on the lattice-gas model in the quasichemical approximation, which takes into account the correlation effects of the nearest interacting molecules. The methods for calculation of the surface tension using a reference surface were considered. The key method is the calculation using an equimolecular reference surface. In the calculation by determining the force moment balance of the transition region, the reference surface is shifted toward the liquid phase of the drop, although the surface tension values are rather similar for both methods. For equilibrium drops, the notion of tension surface was found to be absent. The temperature dependences of the surface tension were studied. The critical sizes of the drops corresponding to the conditions of drop stability as a condensed phase were elucidated.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 663–671, April, 2010.
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Tovbin, Y.K., Rabinovich, A.B. Surface tension of equilibrium spherical drops in the vapor phase. Russ Chem Bull 59, 677–685 (2010). https://doi.org/10.1007/s11172-010-0146-8
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DOI: https://doi.org/10.1007/s11172-010-0146-8