Acid-base equilibria of monocarboxylic acids in various saline media: Analysis of data using Pitzer equations

被引：19

作者：

Barriada, JL ^{[1
]}

Brandariz, I ^{[1
]}

de Vicente, MES ^{[1
]}

机构：

[1] Univ A Coruna, Fac Ciencias, Dept Quim Fis & Enxeneria Quim 1, E-15071 La Coruna, Spain

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2000年 / 45卷 / 06期

关键词：

D O I：

10.1021/je000150p

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The protonation constants of acetic, chloroacetic, and phenylacetic acids in KNO3 at 25 degreesC at several ionic strengths were determined by potentiometry with a glass electrode. pK* versus I plots were fitted to Pitzer equations as well as reported pK* data. The most salient conclusion reached is that all acid-electrolyte interaction parameters show roughly the same value irrespective of the particular carboxylic acid. On the basis of this finding, an average equation that reproduces the behavior of simple carboxylic acids in different saline media was developed.

引用

页码：1173 / 1178

页数：6

共 36 条

[1]

[Anonymous], 1991, ACTIVITY COEFFICIENT, DOI DOI 10.1201/9781351069472

[2] Trend and energetics of pK* vs. ionic strength for o-chlorobenzoic, m-nitrobenzoic and benzoic acids in aqueous KNO3 solutions at 298 K [J].

Barriada, JL ;

Brandariz, I ;

Armesto, XL ;

Herrero, R ;

de Vicente, MES .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1998, 94 (20) :3093-3096

[3]

Benezeth P, 1997, J SOLUTION CHEM, V26, P63

[4] DEPENDENCE OF EQUILIBRIUM-CONSTANTS OF L-VALINE ON IONIC-STRENGTH ACCORDING TO GUGGENHEIM, SCATCHARD AND PITZER MODELS [J].

BRANDARIZ, I ;

ARCE, F ;

ARMESTO, XL ;

PENEDO, F ;

DEVICENTE, MS .

MONATSHEFTE FUR CHEMIE, 1993, 124 (03) :249-257

[5]

BRANDARIZ I, UNPUB

[6]

Daniele P.G., 1997, CURR TOP SOL CHEM, V2, P253

[7] IONIC-STRENGTH DEPENDENCE OF FORMATION-CONSTANTS .1. PROTONATION CONSTANTS OF ORGANIC AND INORGANIC ACIDS [J].

DANIELE, PG ;

RIGANO, C ;

SAMMARTANO, S .

TALANTA, 1983, 30 (02) :81-87

[8] Speciation of low molecular weight carboxylic ligands in natural fluids: protonation constants and association with major components of seawater of oxydiacetic and citric acids [J].

De Stefano, C ;

Gianguzza, A ;

Piazzese, D ;

Sammartaus, S .

ANALYTICA CHIMICA ACTA, 1999, 398 (01) :103-110

[9] Medium effects on the protonation of carboxylic acids at different temperatures [J].

DeRobertis, A ;

DeStefano, C ;

Foti, C .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1999, 44 (02) :262-270

[10] THERMODYNAMIC PARAMETERS FOR THE PROTONATION OF CARBOXYLIC-ACIDS IN AQUEOUS TETRAETHYLAMMONIUM IODIDE SOLUTIONS [J].

DEROBERTIS, A ;

DESTEFANO, C ;

RIGANO, C ;

SAMMARTANO, S .

JOURNAL OF SOLUTION CHEMISTRY, 1990, 19 (06) :569-587

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