Abstract
Kirkwood-Buff integrals are calculated from the thermodynamic data for binary mixtures of water with methanol, ethanol, 1-propanol, and 2-propanol at a temperature of 298.15 K in the pressure range from atmospheric to 100 MPa. The values of local compositions Δn ij are calculated which characterize the excess (or deficit) of molecules i around the central molecule j. It is found that the pressure affects destructively the homoassociation in all mixtures studied. In a series MeOH < EtOH < 2-PrOH < 1-PrOH an excess of molecules around the similar type molecules increases in the local environment and the pressure effect on the local composition is enhanced.
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Original Russian Text © 2014 D. M. Makarov, G. I. Egorov.
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Translated from Zhurnal Strukturnoi Khimii, Vol. 55, No. 2, pp. 283–289, March–April, 2014.
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Makarov, D.M., Egorov, G.I. Analysis of the pressure effect on the local composition in a water-alkanol mixture using Kirkwood-Buff integrals. J Struct Chem 55, 263–269 (2014). https://doi.org/10.1134/S0022476614020103
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DOI: https://doi.org/10.1134/S0022476614020103