Thermodynamics of cation exchange. VI. Selectivity and activity coefficients in moderately concentrated solutions

1968 ◽  
Vol 72 (8) ◽  
pp. 2789-2797 ◽  
Author(s):  
P. Meares ◽  
J. F. Thain
Keyword(s):  
Cation Exchange ◽  
Activity Coefficients ◽  
Concentrated Solutions

THE ACIDITY FUNCTIONS H0 AND J0(HR) FOR THE SYSTEM FORMIC ACID–WATER

1960 ◽  
Vol 38 (4) ◽  
pp. 602-611 ◽  
Author(s):  
Ross Stewart ◽  
Trevor Mathews
Keyword(s):  
Formic Acid ◽  
Activity Coefficients ◽  
Water System ◽  
Acid Water ◽  
Concentrated Solutions ◽  
Acidity Functions

The acidity functions H0 and J0(HR) have been measured for the whole range of the formic acid – water system. The large negative J0 values for the more concentrated solutions fail to correlate with the functions derived by Gold on the basis of certain assumptions regarding the activity coefficients of the species involved. The cause of this deviation is discussed. The term log [R+]/[ROH] for the ionization of triphenylcarbinols in formic acid has been found to vary linearly with 1/T.

Properties of Concentrated Solutions of Indium Chloride

1975 ◽  
Vol 53 (12) ◽  
pp. 1761-1764
Author(s):  
Alan N. Campbell
Keyword(s):  
Molar Volume ◽  
Activity Coefficients ◽  
Ionization Constant ◽  
Relative Viscosity ◽  
Specific Conductance ◽  
Concentrated Solutions ◽  
Degree Of Ionization ◽  
Indium Chloride ◽  
Solvent Water ◽  
Equivalent Conductance

Certain properties of concentrated solutions of indium trichloride, ranging in strength from 9.889 to 0.4070 m, have been investigated. These properties are: density, molar volume, specific and equivalent conductance, degree of ionization, ionization constant, relative viscosity, activities, and activity coefficients of solvent water and of solute. Two interesting results emerge, viz., the specific conductance passes through a maximum at 3.5 m, and, if the ionization of indium chloride is treated as that of a binary electrolyte, the expression α2c/(1 − α) is constant within 10% over the range 6.267 to 0.7363 m (13.90 to 2.122 N).

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