Thermodynamic study of (KCl+proline+water) system based on potentiometric measurements at T=(298.2 and 303.2)K

Thermodynamic properties determination of ternary mixture (NaCl+Na2HPO4+water) using potentiometric measurements

“…The sodium ion-selective electrode was prepared in accordance with the general procedure of PVC membrane construction which has been reported in the previous works [17,18]. Also, the Ag-AgCl wire electrodes were prepared essentially as described elsewhere by electrolysis [19].…”

Thermodynamic Study of (KCl + N,N-Dimethylformamide + Water) System Based on Potentiometric Measurements

“…Hernandez-Luis et al measured the activity coefficients of NaF in N -methylformamide + water and NaCl in formamide + water and PEG 4000 + water mixtures. , Deyhimi et al determined the activity coefficient of NH 4 Cl and NaCl in some mixed solvents. − The Pitzer ion-interaction model has been successfully used by these investigators. In addition, thermodynamic properties of (RbF + RbCl + H 2 O), (CsF + CsCl + H 2 O), (RbF + Rb 2 SO 4 + H 2 O), and (CsF + Cs 2 SO 4 + H 2 O) systems were studied by Huang and coworkers. , Hu et al reported the thermodynamic properties of (CsF + urea + H 2 O), (CsF + N -methylformamide + H 2 O), and (RbCl/CsCl + ethylene carbonate + H 2 O) ternary systems. , Moreover, the thermodynamic investigation of KCl in (glucose, formamide, diethanolamine, 1-PrOH, and proline + water) mixed solvent systems was done by our research group. − The activity coefficients, osmotic coefficients, and excess Gibbs free energy for these electrolyte systems were determined by using ion-selective electrodes. Amides are well-studied solvents that are widely used as reagents and reaction media.…”

“…In this research, the thermodynamic properties of the (KCl + N , N -dimethylformamide + water) system were determined based on potentiometric technique. This work is an extension of our studies on the thermodynamic properties of alkali metal salts in mixed solvent systems. − The cell potential measurements were performed by a galvanic cell of type: Ag|AgCl|KCl ( m ), DMF (wt %), H 2 O (1 – wt)%|K-ISE. This galvanic cell includes a potassium polymeric membrane (K-ISE) and Ag–AgCl electrodes that were made in our laboratory.…”

Pitzer, Modified Pitzer, and Extended Debye–Hückel Modeling Approaches: Ternary RbF or CsF + Glycine + Water Electrolyte Systems at 298.15 K

“…10−12 Furthermore, the presence of electrolyte solutions is encountered in separation processes for amino acids; thus, there is a need for a more profound understanding of the thermodynamic behavior of electrolyte + amino acid systems. 13 Ghalami-Choobar et al measured the mean activity coefficients for KCl in the proline + water system. 13 Zhuo et al determined the thermodynamic properties for CaCl 2 in (glycine, alanine, serine, or proline + water) mixtures at T = 298.15 K. 14,15 In our previous work, we obtained the mean activity coefficients of RbCl and CsCl in glycine + water mixtures and RbF and CsF in ethylene glycol + water.…”

“…13 Ghalami-Choobar et al measured the mean activity coefficients for KCl in the proline + water system. 13 Zhuo et al determined the thermodynamic properties for CaCl 2 in (glycine, alanine, serine, or proline + water) mixtures at T = 298.15 K. 14,15 In our previous work, we obtained the mean activity coefficients of RbCl and CsCl in glycine + water mixtures and RbF and CsF in ethylene glycol + water. 16,17 As an extension of our series of works on the thermodynamic properties of unusual alkali metal salts in the mixed solvent system, 16,17 this paper investigated the ternary systems RbF or CsF + glycine + H 2 O.…”