Tautomerization of acetylacetone and relation of the tautomerization constant to other equilibrium parameters

1987 ◽  
Vol 52 (12) ◽  
pp. 2850-2858
Author(s):  
Jiří Mollin ◽  
Jitka Dopitová ◽  
Oldřiška Staňková
Keyword(s):  
Gibbs Energy ◽  
Mixed Solvents ◽  
Keto Form ◽  
Gibbs Energies ◽  
Gibbs Energy Of Transfer ◽  
Partial Pressures ◽  
Energy Of Transfer ◽  
Organic Solutions

The relative partial pressures of acetylacetone above mixed aqueous-organic solutions were measured chromatographically and the Gibbs energies of acetylacetone transfer from water to the mixed solvents were determined and separated into contributions from the keto and enol forms. The tautomerization equilibrium was related to other thermodynamic equilibria and the Gibbs energy of transfer of the keto form was correlated with that of acetone.

Dissociation Constants of p-Nitroaniline in Mixed Solvents and a Critical Assessment of the Solvent-Sorting Equilibrium Method for the Determination of the Single Ion Gibbs Energy of Transfer of H+ Ion from Aqueous to Aquo Rich Organic Solvents

2001 ◽  
Vol 215 (1) ◽  
Author(s):  
G. Bandyopadhyay ◽  
R. Mondal ◽  
Sujit Chandra Lahiri
Keyword(s):  
Gibbs Energy ◽  
Organic Solvents ◽  
Dissociation Constants ◽  
Mixed Solvents ◽  
Critical Assessment ◽  
Gibbs Energy Of Transfer ◽  
Equilibrium Method ◽  
Energy Of Transfer

AbstractThe dissociation constants of p-nitroaniline (B) (A critical assessment of the solvent-sorting equilibrium method using p-nitroaniline as indicator has been made. The method is not suitable to determine the Gibbs energy of transfer of H

Studies on the Solubility and Dissociation Constants of Oxalic Acid in Aquo + Ethanolic Mixtures and Determination of Single-Ion Gibbs Energy of Transfer from Aqueous to Aquo + Ethanolic Mixtures

2002 ◽  
Vol 216 (8) ◽  
Author(s):  
S. K. Gumtya ◽  
Sujit Chandra Lahiri ◽  
S. Aditya
Keyword(s):  
Gibbs Energy ◽  
Oxalic Acid ◽  
Organic Acid ◽  
Dissociation Constants ◽  
Gibbs Energies ◽  
Gibbs Energy Of Transfer ◽  
Gibbs Energies Of Transfer ◽  
Potassium Hydrogen ◽  
Energy Of Transfer

The dissociation constants of the simplest dibasic organic acid, oxalic acid were determined conductometrically and pH metrically in ethanol + water mixtures (0–87 wt% of ethanol). These data were coupled with solubility values of oxalic acid and potassium hydrogen oxalate to calculate the Gibbs energies of transfer of oxalic acid, bioxalate(HOXThe p[H

Solubility and Thermodynamic Transfer Functions of Cesium Dianilinetetraisothiocyanatochromate(III)

1998 ◽  
Vol 63 (3) ◽  
pp. 293-298
Author(s):  
Vladislav Holba
Keyword(s):  
Experimental Data ◽  
Isopropyl Alcohol ◽  
Transfer Functions ◽  
Butyl Alcohol ◽  
Aqueous Methanol ◽  
Gibbs Energies ◽  
Gibbs Energy Of Transfer ◽  
Energy Of Transfer ◽  
The Given ◽  
Reference Electrolyte

The solubilities of cesium dianilinetetraisothiocyanatochromate(III) in water as well as in aqueous methanol, isopropyl alcohol, tert-butyl alcohol and acetonitrile were measured as a function of temperature and solvent composition. The Gibbs energies, enthalpies and entropies of transfer of the salt from water to the given solvents have been evaluated from experimental data. The contribution of [Cr(C6H5NH2)2(NCS)4]- ion to the Gibbs energy of transfer of the investigated salt has been calculated using the tetraphenylarsonium tetraphenylborate (TATB) reference electrolyte assumption.

Studies on Thermodynamic Dissociation Constants of 2,2′-Bipyridine and 1,10-Phenanthroline in Acetonitrile + Water Mixtures and Gibbs Energy of Transfer of Hydrogen Ions from Water to Acetonitrile + Water Mixtures

2002 ◽  
Vol 216 (6) ◽  
Author(s):  
G. Bandyopadhyay ◽  
Sujit Chandra Lahiri
Keyword(s):  
Gibbs Energy ◽  
Comparative Study ◽  
Dissociation Constants ◽  
Hydrogen Ions ◽  
Gibbs Energy Of Transfer ◽  
Energy Of Transfer

The thermodynamic dissociation constants for isoelectric reactions of the type LHAttempts were made to understand the basicity and structuredness of acetonitrile + water mixtures from a comparative study of Δ

Preferential Solvation of Silver (I) Bromate in Methanol-Dimethylsulfoxide Mixtures

1984 ◽  
Vol 39 (6) ◽  
pp. 600-602
Author(s):  
S. Janardhanan ◽  
C. Kalidas
Keyword(s):  
Gibbs Energy ◽  
Dimethyl Sulfoxide ◽  
Transport Number ◽  
Preferential Solvation ◽  
Reference Method ◽  
Silver Ion ◽  
Transfer Energy ◽  
Gibbs Energy Of Transfer ◽  
Energy Of Transfer ◽  
Solvent Transport

The solubiltiy of silver bromate, the Gibbs transfer energy of Ag+ and BrO3- and the solvent transport number in methanol-dimethyl sulfoxide mixtures are reported. The solubility of silver bromate increases with addition of DMSO. The Gibbs energy of transfer of the silver ion (based on the ferrocene reference method) decreases, while that of the bromate ion becomes slightly negative with the addition of DMSO. The solvent transport number A passes through a maximum (⊿ = 1.0 at XDMSO = 0.65. From these results, it is concluded that the silver ion is preferentially solvated by DMSO whereas the bromate ion shows no preferential solvation.

scholarly journals Transfer of Individual Ions from H2O to D2O. Gibbs Energy of Transfer of Dimethylmaleate Ion.

1977 ◽  
Vol 31a ◽  
pp. 585-590 ◽  
Author(s):  
Antti Vesala ◽  
Juho-Pertti Jalava ◽  
Pentti Salomaa ◽  
H. Svanholt ◽  
Paul Hagenmuller ◽  
...  
Keyword(s):  
Gibbs Energy ◽  
Gibbs Energy Of Transfer ◽  
Energy Of Transfer

Studies on Thermodynamic Dissociation Constants of 2,2’-Bipyridine, or 1,10-Phenanthroline in Acetone + Water Mixtures and Gibbs Energy of Transfer of the Hydrogen Ion from Water to Acetone + Water Mixtures

2001 ◽  
Vol 215 (1) ◽  
Author(s):  
G. Bandyopadhyay ◽  
Sujit Chandra Lahiri
Keyword(s):  
Gibbs Energy ◽  
Comparative Study ◽  
Structural Properties ◽  
Dissociation Constants ◽  
Hydrogen Ion ◽  
Gibbs Energy Of Transfer ◽  
Acetone Water ◽  
Energy Of Transfer

AbstractThe thermodyamic dissociation constants for isoelectric reaction of the type LHAttempts have been made to understand the basicity and structural properties of acetone + water mixtures from a comparative study of ΔG

The Measurement of the Gibbs Energy of Transfer Between Oil and Water Using a Nano-Carbon Paste Electrode

2013 ◽  
Vol 26 (2) ◽  
pp. 351-358 ◽  
Author(s):  
Patrick Gan ◽  
Denise Lowinsohn ◽  
John S Foord ◽  
Richard G Compton
Keyword(s):  
Gibbs Energy ◽  
Carbon Paste Electrode ◽  
Carbon Paste ◽  
Gibbs Energy Of Transfer ◽  
Nano Carbon ◽  
Energy Of Transfer ◽  
Paste Electrode
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