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Preferential solvation in mixed solvents Part 8. Aqueous methanol from sub-ambient to elevated temperatures

Marcus, Y. (1999) Preferential solvation in mixed solvents Part 8. Aqueous methanol from sub-ambient to elevated temperatures. Physical Chemistry Chemical Physics, 1 (12). pp. 2975-2983.

Link to Published Version: http://dx.doi.org/10.1039/a900459i
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Abstract

The inversed Kirkwood-Buff integral method is applied to mixtures of water and methanol from - 13 to 250 °C. Preferential solvation is deduced from these integrals and shown over the entire composition and temperature ranges. The self-preference of water increases with rising temperatures in both water- and methanol-rich mixtures, reaching a limiting value near the critical point of methanol. At the equimolar composition, though, this self- preference reaches a shallow maximum near 150 °C. The methanol self- preference in methanol-rich mixtures is slight, but this hydrophobic effect is considerable at 15 mol% of methanol, reaching a pronounced maximum near 150 °C. The effect of the methanol on the structure of the water, the incorporation of water into the structure of methanol, and their changes with increasing temperatures are discussed.

Publication Type: Journal Article
Murdoch Affiliation: School of Mathematical and Physical Sciences
Publisher: Royal Society of Chemistry
URI: http://researchrepository.murdoch.edu.au/id/eprint/35923
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