Activity Coefficient Determination for the Ternary Systems CsCl in N-Methylformamide or Urea plus Water Mixtures at T=298.15 K

被引：13

作者：

Lu, Jia ^{[1
]}

Li, Shu'ni ^{[1
]}

Zhai, Quanguo ^{[1
]}

Jiang, Yucheng ^{[1
]}

Hu, Mancheng ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Sch Chem & Chem Engn, Key Lab Macromol Sci Shaanxi Prov, Xian 710062, Shaanxi, Peoples R China

来源：

JOURNAL OF SOLUTION CHEMISTRY | 2013年 / 42卷 / 09期

基金：

中国国家自然科学基金;

关键词：

CsCl; Activity coefficient; NMF; Urea; Potentiometric method; EPSILON-INCREASING COSOLVENT; AQUEOUS MIXTURES; THERMODYNAMIC PROPERTIES; STRONG ELECTROLYTES; METAL CHLORIDES; NACL; SOLVATION; CARBONATE; METHANOL;

D O I：

10.1007/s10953-013-0078-7

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：

The mean activity coefficients for CsCl in N-methylformamide or urea (w) + H2O (1 - w) systems were determined in this work by potentiometry, using ion-selective electrodes at 298.15 K. The value of mass fraction w was varied between 0.00 and 0.40 in five unit-steps and the molality of CsCl was between 0.0020 and 1.4009 mol center dot kg(-1). The experimental data have been correlated with the Pitzer, modified Pitzer and the extended Debye-Huckel equations. The resulting values of the mean activity coefficients, the osmotic coefficients and the standard Gibbs energy of transfer, together with the Pitzer ion-interaction parameters (beta ((0)), beta ((1)) and C (phi)), extended Debye-Huckel parameters (a, c and d), and modified Pitzer parameters (b, B (MX), C (MX)) are reported for the investigated systems.

引用

页码：1782 / 1793

页数：12

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