Gibbs Energies of Transfer of Anions from Water to Mixed Aqueous Organic Solvents

2007 ◽  
Vol 107 (9) ◽  
pp. 3880-3897 ◽  
Author(s):  
Yizhak Marcus
Keyword(s):  
Organic Solvents ◽  
Gibbs Energies ◽  
Gibbs Energies Of Transfer

Solubility of Tris(ethylenediamine)chromium(III) and Hexaureachromium(III) Hexacyanoferrates(III) in Water and Mixed Water-Organic Solvents

1995 ◽  
Vol 60 (4) ◽  
pp. 537-544 ◽  
Author(s):  
Vladislav Holba ◽  
Marcela Hanková
Keyword(s):  
Experimental Data ◽  
Aqueous Solutions ◽  
Binary Mixtures ◽  
Organic Solvents ◽  
Activity Coefficients ◽  
Butyl Alcohol ◽  
Gibbs Energies ◽  
Gibbs Energies Of Transfer ◽  
Mixed Water

The solubilities of tris(ethylenediamine)chromium(III) and hexa(urea)chromium(III) hexacyanoferrates(III) in aqueous solutions of different supporting electrolytes as well as in binary mixtures of water with methanol, tert-butyl alcohol and acetonitrile were measured at 25 °C. The experimental data have been used to evaluate the activity coefficients of the saturating salts in water and their Gibbs energies of transfer from water into the binary mixtures investigated.

Gibbs Energies of Transfer of Cations from Water to Mixed Aqueous Organic Solvents

2000 ◽  
Vol 100 (3) ◽  
pp. 819-852 ◽  
Author(s):  
C. Kalidas ◽  
Glenn Hefter ◽  
Yizhak Marcus
Keyword(s):  
Organic Solvents ◽  
Gibbs Energies ◽  
Gibbs Energies Of Transfer

Activity Coefficients and Gibbs Energies of Transfer of Tetraalkylammonium Dianilinetetraisothiocyanatochromates(III)

1994 ◽  
Vol 59 (8) ◽  
pp. 1738-1744
Author(s):  
Vladislav Holba
Keyword(s):  
Activity Coefficients ◽  
Transfer Functions ◽  
Butyl Alcohol ◽  
Methyl Ethyl ◽  
Tetraalkylammonium Ions ◽  
Ionic Transfer ◽  
Gibbs Energies ◽  
Gibbs Energies Of Transfer ◽  
Acetonitrile Solutions ◽  
Mixed Systems

The solubilities of tetraalkylammonium dianilinetetraisothiocyanatochromates(III) (alkyl = methyl, ethyl, 1-propyl, and 1-butyl) in water, water - methanol, water - tert-butyl alcohol and water - acetonitrile solutions were measured at 25 °C. The results were used to evaluate the activity coefficients and Gibbs energies of transfer of the saturating salts from water to the mixed systems. The Gibbs energies of transfer of the [Cr(C6H5NH2)2(NCS)4]- ion were obtained by means of known ionic transfer functions for the tetraalkylammonium ions based on the TATB assumption.

Gibbs energies of transfer of individual ions from water to acetone + water solvents

1989 ◽  
Vol 67 (8) ◽  
pp. 1268-1273 ◽  
Author(s):  
Mahmoud Mohamad Elsemongy ◽  
Ahmed Ahmed Abdel-Khalek
Keyword(s):  
Glass Electrode ◽  
Aqueous Mixtures ◽  
Free Energies ◽  
Emf Measurements ◽  
Gibbs Energies ◽  
Electrode Potentials ◽  
Gibbs Energies Of Transfer ◽  
Acetone Water ◽  
Alkali Metal Halides ◽  
Dipolar Aprotic Solvents

The standard absolute potentials of hydrogen, Ag–AgX (X = Cl, Br, and I) and M/M+ (M = Li, Na, K, Rb, and Cs) electrodes in nine different acetone + water solvents containing up to 80 wt. % acetone were determined from the emf data at 25 °C of the cells: glass electrode/HCl (m), solvent/AgCl–Ag and glass electrode (M)/MX (m), solvent/AgX–Ag. The standard Gibbs free energies of a transfer of halogen acids and alkali metal halides as well as their constituent individual ions from water to the respective solvents were computed. The observed increases in [Formula: see text] values of all ions with increasing acetone content of the solvent and their relative order in each solvent were interpreted and discussed. A comparison of the present results with those obtained earlier in the dimethyl sulphoxide (DMSO) + water solvents shows the different nature of the two dipolar aprotic solvents, acetone and DMSO, in their aqueous mixtures. Keywords: acetone + water solvents, electrode potentials, emf measurements, individual ions, transfer free energies.

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