The thermodynamic properties of solutions of L-ascorbic acid in dimethyl sulfoxide and water-dimethyl sulfoxide mixtures

被引：6

作者：

Kazoyan, E. A. ^{[1
]}

Terzyan, A. M. ^{[1
]}

Markaryan, Sh. A. ^{[1
]}

机构：

[1] Yerevan State Univ, Yerevan 375049, Armenia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2011年 / 85卷 / 04期

关键词：

ascorbic acid; dimethyl sulfoxide; densitometry; surface tension; the enthalpy of solution; MOLAR VOLUMES; AQUEOUS-SOLUTIONS; DIMETHYLSULFOXIDE;

D O I：

10.1134/S0036024411040133

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Solutions of L-ascorbic acid (AA) in dimethyl sulfoxide (DMSO) and DMSO-water mixtures were studied by the densitometry, surface tension, and calorimetry methods. The apparent and partial molar volumes of AA in solutions at 298.15 K were calculated. Surface tension insignificantly increased as the concentration of AA in DMSO grew. The enthalpies of solution of AA in the solvents and the enthalpies of transfer of AA from water into DMSO and DMSO-water mixed solvents were calculated. The results obtained were explained by the existence of H-bonds between AA and DMSO molecules.

引用

页码：612 / 616

页数：5

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[1] The thermodynamic properties of solutions of L-ascorbic acid in dimethyl sulfoxide and water-dimethyl sulfoxide mixtures
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[J]. Russian Journal of Physical Chemistry A, 2011, 85 : 612 - 616
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