Determination of Activity Coefficients for Cesium Chloride in Methanol−Water and Ethanol−Water Mixed Solvents by Electromotive Force Measurements at 298.15 K

Abstract

Activity coefficients for CsCl in different methanol-water and ethanol-water mixed solvents were determined at 298.15 K by electromotive force (EMF) measurements of the cell: Cs-ISE|CsCl (m), alcohol (Y), H 2 O (100 -Y)|Ag|AgCl. The cesium ion-selective electrode (Cs-ISE) and the Ag|AgCl electrode used in this work were made in this laboratory and had good Nernstian response. The experimental data were calculated using the Pitzer model. Standard cell potentials and Pitzer parameters were obtained. From these, mean activity coefficients of CsCl, osmotic coefficients of the mixtures, standard Gibbs free energies of transference of CsCl from water to methanol-water or ethanol-water mixtures, and the corresponding medium effects were calculated.

Activity Coefficients for CsBr + MeOH/EtOH + H2O Ternary Systems Using Potentiometric Measurements at 298.15 K

“…10,11 The Cs-ISE was prepared by ourselves. 14 The Br-ISE (model 302) was obtained from Jiangsu Electroanalytic Instrument Factory.…”

Activity Coefficients of RbF in Urea–Water and Formamide–Water Mixtures from Potentiometric Measurements

“…Therefore, probing into the nature of interactions between amides and electrolytes is important for the design of suitable processes for its application. For example, Hernández-Luis et al carried out a series of systematic studies of electrolyte NaF/NaCl/NaBr in formamide–water mixtures. − In recent years, our research group investigated the thermodynamic properties of heavy alkaline metal chlorides and fluorides in organic–water with ε-increasing and ε-decreasing cosolvents such as alcohol–water, amino acid–water, and amide–water et al − The solution properties of aqueous mixtures of formamide–water and urea–water have received considerable attention in the literature. , The results showed that the dielectric constants (ε-increasing and ε-decreasing cosolvents) of the mixed solvents had a great effect on the thermodynamic properties of the systems.…”

Thermodynamic study of potassium chloride in glycerol–water mixed solvents using electromotive force measurements at (298.2, 303.2 and 310.2)K

“…It might be because of their application for developing electrolyte solution theories, research in biochemistry, environmental chemistry, oceanography, geochemistry, industrial chemistry, chemical and biological industries and electroanalysis [1][2][3][4][5][6][7]. Activity coefficients and other thermodynamic properties such as osmotic coefficients and excess Gibbs free energy allow us to analyze the deviation of a real solution from ideality [1,4,7].…”

“…Both are useful experimental techniques. The electromotive force (EMF) is one of the best methods because of its simplicity, high speed, accuracy, stability in measured potentials, and possibility of measurement in wider concentration range particularly in diluted ranges [1][2][3][4][5]. Potentiometric sensors detect the relationship between the activity of the species and the observed potential response with the two-electrode system comprising an indicator electrode and a reference electrode [8].…”