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Información tecnológica

On-line version ISSN 0718-0764

Abstract

PAEZ, Manuel S; VERGARA, María K  and  DE LA ESPRIELLA, Nicolás A. Interactions of DL-Alanine in Aqueous Solutions of 1-Butyl, 3-Methylimidazolium Trifluoromethanesulfonate at Different Temperatures. Inf. tecnol. [online]. 2015, vol.26, n.1, pp.63-70. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642015000100007.

Densities of DL-alanine in aqueous solutions of ionic liquid 1-butyl-3- methylimidazolium trifluoromethane-sulfonate were determined at temperatures ranging from 283.15 to 313.15 K using an Anton Paar DMA 5000 vibrating tube densitometer. The apparent molar volume, the infinite dilution apparent molar volume, the second derivative of the infinite dilution partial molar volume with respect to temperature, the partial molar volume of transfer at infinite dilution, and the number of hydration were calculated. It was found that the values of the second derivative of the limiting apparent molar volume with temperature are negative at all concentrations of the mixed solvent. This indicates that solute-solvent interactions are favored and that the DL-alanine acts as a disruptor of the structure of the solvent.

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