The Debye-Hückel Theory for Hydrated Ions III. The Square-Cross Rule for the Gibbs Energy of Aqueous Solutions of Some 1:1 Electrolytes at 25°C

1991 ◽  
Vol 95 (1) ◽  
pp. 72-76 ◽  
Author(s):  
Hansjürgen Schönert
Keyword(s):  
Gibbs Energy ◽  
Aqueous Solutions ◽  
Hydrated Ions ◽  
Hückel Theory

Apparent molal heat capacities and volumes of aqueous electrolytes at 25 °C: NaClO3, NaClO4, NaNO3, NaBrO3, NaIO3, KClO3, KBrO3, KIO3, NH4NO3, NH4Cl, and NH4ClO4

1978 ◽  
Vol 56 (1) ◽  
pp. 24-28 ◽  
Author(s):  
Alain Roux ◽  
Goolam M. Musbally ◽  
Gérald Perron ◽  
Jacques E. Desnoyers ◽  
Prem Paul Singh ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Infinite Dilution ◽  
Heat Capacities ◽  
Aqueous Electrolytes ◽  
Apparent Molal Volumes ◽  
Hückel Theory ◽  
Standard Values ◽  
Molal Volumes ◽  
Apparent Molal Heat Capacities

Measurements at 25 °C with flow calorimeters and densimeters have led to heat capacities and densities of aqueous solutions of 11 1:1 electrolytes: NaClO3, NaBrO3, NaIO3, NaNO3, NaClO4, NH4NO3, KClO3, KBrO3, KIO3, NH4Cl, and NH4ClO4. The first 6 salts were studied up to near saturation. We have used results of these measurements to obtain apparent molal heat capacities and apparent molal volumes of the various solutes. Extrapolation to infinite dilution on the basis of the Debye–Hückel theory bas led to [Formula: see text]and [Formula: see text] values for each solute. We have compared these standard values with results of earlier investigations.

A Gibbs energy equation for LiBr aqueous solutions

2006 ◽  
Vol 29 (1) ◽  
pp. 36-46 ◽  
Author(s):  
D.S. Kim ◽  
C.A. Infante Ferreira
Keyword(s):  
Gibbs Energy ◽  
Aqueous Solutions ◽  
Energy Equation

scholarly journals FactSage and ChemApp: Two tools for the prediction of multiphase chemical equilibria in solutions

2008 ◽  
Vol 80 (6) ◽  
pp. 1293-1302 ◽  
Author(s):  
Gunnar Eriksson ◽  
Erich Königsberger
Keyword(s):  
Gibbs Energy ◽  
Aqueous Solutions ◽  
Environmental Science ◽  
Solution Chemistry ◽  
Third Party ◽  
Physical Metallurgy ◽  
Chemical Equilibria ◽  
Hydrometallurgical Processing ◽  
Energy Models ◽  
Solution Models

The integrated thermochemical databank system FactSage enables the user to calculate equilibria and thermodynamic properties for a wide variety of multicomponent, multiphase systems and reactions. The Gibbs energy models and databases for condensed, gaseous, and aqueous solutions presently implemented in FactSage are of interest to chemical and physical metallurgy, chemical and corrosion engineering, inorganic and solution chemistry, geochemistry, environmental science, etc. Models for the aqueous phase include the Pitzer and Helgeson formalisms, but data and subroutines for concentrated aqueous solutions have also been provided by OLI Systems. ChemApp is a programmer's library for thermochemistry that also incorporates the Gibbs energy minimizer of FactSage. Applications of ChemApp include, for example, the handling of repetitive complex equilibrium calculations in application-specific programs and its linking to third-party process simulation packages. In this work, user-defined aqueous solution models in FactSage and ChemApp have been applied to the hydrometallurgical processing of aluminum ores in both caustic and acidic leach solutions.

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