Experimental Study of the Excess Molar Enthalpy of Ternary Mixtures Containing Water + (1,2-Propanediol, or 1,3-Propanediol, or 1,2-Butanediol, or 1,3-Butanediol, or 1,4-Butanediol, or 2,3-Butanediol) plus Electrolytes at 298.15 K and Atmospheric Pressure

被引:6
|
作者
Checoni, Ricardo F. [1 ]
Francesconi, Artur Z. [1 ]
机构
[1] Univ Estadual Campinas, Sch Chem Engn, BR-13083970 Campinas, SP, Brazil
关键词
Water; Alkanediols; Electrolytes; Excess molar enthalpy; 1,2-BUTANEDIOL PLUS WATER; BINARY-MIXTURES; 298.15; K; DIFFERENT TEMPERATURES; 1,2-PROPANEDIOL; DIOL; 1,4-BUTANEDIOL; DENSITIES; 1,3-PROPANEDIOL; 1,2-ETHANEDIOL;
D O I
10.1007/s10953-009-9426-z
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
Excess molar enthalpies (H (m) (E) ) of ternary mixtures containing water+(1,2-propanediol or 1,3-propanediol or 1,2-butanediol or 1,3-butanediol or 1,4-butanediol or 2,3-butanediol)+(sodium bromide, or ammonium bromide, or tetraethyl ammonium bromide, or 1-n-butyl-3-methylimidazolium bromide at 0.1 mola <...dm(-3)) at 298.15 K and atmospheric pressure have been determined as a function of composition using a modified 1455 Parr mixture calorimeter. The H (m) (E) values are negative for all mixtures over the whole composition range. The influence of the electrolyte on the hydrophobic and hydrophilic effects as well as on the behavior of H (m) (E) is discussed.
引用
收藏
页码:1055 / 1070
页数:16
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