Density and activity of perrhenic acid aqueous solutions at T= 298.15 K - Université de Montpellier Accéder directement au contenu
Article Dans Une Revue Journal of Chemical Thermodynamics Année : 2015

Density and activity of perrhenic acid aqueous solutions at T= 298.15 K

Résumé

Published isopiestic molalities for aqueous HReO4 solutions at T = 298.15 K are completed. Binary data (variation of the osmotic coefficient and activity coefficient of the electrolyte in solution in the water) at T = 298.15 K for perrhenic acid HReO4 are determined by direct water activity and osmolality measurements. The variation of the osmotic coefficient of this acid in water is represented mathematically according to a model recommended by the National Institute of Standards and Technology and according to the specific interaction theory. The data are also used to evaluate the parameters of the standard three-parameters of Pitzer’s ion-interaction model, along with the parameters of Archer’s four-parameter extended ion-interaction model, to higher molalities than previously advised. Experimental thermodynamic data are well represented by these models. Density variations at T = 298.15 K are also established and used to express the activity coefficient values on both the molar and molal concentration scales.
Fichier non déposé

Dates et versions

hal-03675822 , version 1 (23-05-2022)

Identifiants

Citer

P. Moeyaert, L. Abiad, C. Sorel, Jean-François Dufrêche, Philippe Moisy. Density and activity of perrhenic acid aqueous solutions at T= 298.15 K. Journal of Chemical Thermodynamics, 2015, 85, pp.61-67. ⟨10.1016/j.jct.2015.01.006⟩. ⟨hal-03675822⟩
22 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More