Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/71723
Title: Solute-solvent interactions in amide-water mixed solvents
Authors: Garcia, B
Alcalde, R
Leal, JM
Matos, JS
UNESCO Clasification: 221030 Soluciones
Keywords: Excess Molar Volumes
Binary-Mixtures
Liquid-Mixtures
Viscosities
Chloroform, et al
Issue Date: 1997
Journal: Journal of Physical Chemistry B 
Abstract: Excess volumes, mixing viscosities, and excess Gibbs energies of activation of viscous flow of the aqueous binary mixtures of the amides formamide, N-methylformamide, N,N-dimethylformamide, pyrrolidin-2-one, and N-methyl-2-pyrrolidinone were calculated from density and viscosity measurements. The values of these functions point to strong amide-water interactions with formation of a variety of aggregates, the nature of which depends on the extent of substitution of the amides; comparison of the functions of the same amides with alkan-1-ols reveal an important hydration effect. Various one-parameter and two-parameter empirical models for prediction of mixing viscosities were in good agreement with the experimental results only for the formamide-water system; none of the models predicted satisfactorily the behavior for the aqueous mixtures of both mono-and disubstituted amides.
URI: http://hdl.handle.net/10553/71723
ISSN: 1520-6106
DOI: 10.1021/jp9626374
Source: Journal Of Physical Chemistry B [ISSN 1520-6106], v. 101 (40), p. 7991-7997, (Octubre 1997)
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