Activity coefficients of potassium perrhenate in aqueous mixtures with KCl, NaCl and KI at 298.15 K

1975 ◽  
Vol 28 (3) ◽  
pp. 665 ◽  
Author(s):  
C Chan
Keyword(s):  
Activity Coefficient ◽  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Aqueous Mixtures ◽  
Ionic Activity ◽  
Activity Product ◽  
Dilute Aqueous Solutions ◽  
Mean Ionic Activity Coefficients

The solubilities of potassium perrhenate in aqueous NaCl, KCl and KI solutions are reported. The solubility activity product for this electrolyte was determined using extrapolation functions involving three different mean ionic activity coefficient expressions. Mean ionic activity coefficients have been computed for potassium perrhenate in dilute aqueous solutions and there is no justification for considering ion association1,2 in these solutions.

Specific ionic interactions and solubility activity product of caesium perrhenate at 298.10 K

1978 ◽  
Vol 31 (7) ◽  
pp. 1411 ◽  
Author(s):  
C Chan ◽  
KH Khoo ◽  
MH Panckhurst
Keyword(s):  
Activity Coefficient ◽  
Aqueous Solutions ◽  
Specific Interaction ◽  
The Other ◽  
Interaction Parameters ◽  
Ionic Interactions ◽  
Aqueous Mixtures ◽  
Ionic Interaction ◽  
Ionic Activity ◽  
Activity Product

The solubilities of caesium perrhenate in aqueous CsCl, NaCl, KCl and KReO4 solutions at 298.10 K are reported. The solubility activity product for CsReO4 was determined by using extrapolation functions involving two different mean ionic activity coefficient expressions and the results were compared; the total ionic strengths of all the saturated perrhenate solutions were less than 0.1 mol dm-3. One of these expressions used is that proposed recently by Panckhurst and Macaskill1,2 which is an extension of Guggenheim's approach,3,4 specific ionic interactions in aqueous solutions being explicitly taken into account. Its use led to more consistent values for the solubility activity product for CsReO4 than those obtained with the other expression which does not incorporate specific interaction parameters. Values of specific ionic interaction parameters for caesium, potassium and sodium perrhenates in dilute aqueous mixtures with CsCl, KCl, KReO4, KI or NaCl are also reported.

scholarly journals Brønsted's Principle of Specific Interaction of Ions and the Mean Ionic Activity Coefficients in Aqueous Solutions of Earth Alkali Halogenides. Calculation of Cationic Radii from the ASPEV Theory.

1979 ◽  
Vol 33a ◽  
pp. 583-592 ◽  
Author(s):  
Torben Smith Sørensen ◽  
Trond Rakke ◽  
Reijo Hämäläinen ◽  
G. Olofsson ◽  
V. B. Sokolov ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Specific Interaction ◽  
Ionic Activity ◽  
The Mean ◽  
Mean Ionic Activity Coefficients

Research on Thermodynamic Properties of Bioleaching Solution in Lean Nickel-Cobalt Ore by Pitzer - Meissner Model

2015 ◽  
Vol 1092-1093 ◽  
pp. 1455-1459
Author(s):  
Chu Yue Hou ◽  
Gui Ying Zhou ◽  
Jian Kang Wen ◽  
Biao Wu
Keyword(s):  
Thermodynamic Properties ◽  
Activity Coefficient ◽  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Pitzer Model ◽  
Foreign Ions ◽  
Nickel Cobalt

In this paper, we jointly use the Pitzer model and the Meissner model to study thermodynamic laws of bioleaching solution in a lean nickel-cobalt ore in the Jilin Baishan, by using the Pitzer model to calculate activity coefficients of single electrolyte aqueous solutions and the Meissner model to calculate activity coefficients of components in the bioleaching solution. Also we studied the rules of activity coefficient of NiSO4 and CoSO4 in the solution. Results show that when separating and purifying foreign ions from bioleaching solution of the lean nickel-cobalt ore, the descending sequence of their ion concentration’s effect over the solution is Mg2+, Fe3+, Fe2+, Ni2+, Co2+ and Ca2+.

Activity Coefficients of Aromatic Solutes in Dilute Aqueous Solutions

1971 ◽  
Vol 10 (4) ◽  
pp. 593-600 ◽  
Author(s):  
Constantine Tsonopoulos ◽  
John M. Prausnitz
Keyword(s):  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Dilute Aqueous Solutions
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