A SOLVENT-EXTRACTION STUDY OF THE THERMODYNAMICS OF ANILINE AND ITS NITRATE

1966 ◽  
Vol 44 (4) ◽  
pp. 521-525 ◽  
Author(s):  
A. Aboul-Seoud ◽  
M. Doheim
Keyword(s):  
Solvent Extraction ◽  
Sodium Nitrate ◽  
Analytical Method ◽  
Distribution Coefficients ◽  
Distribution Method ◽  
Aqueous Sodium ◽  
Extraction Study ◽  
Different Temperatures ◽  
Extracting Solvent ◽  
Nitrate Solutions

The distribution coefficients of aniline between n-heptane and aqueous sodium nitrate solutions were measured at different temperatures. The activity coefficients of aniline in aqueous sodium nitrate solutions were determined. The effect of sodium nitrate on the dissociation of the anilinium ion was studied at different temperatures by a modified distribution method. Attention was directed to the choice of the extracting solvent and of the analytical method. The effect of the presence of undissociated anilinium ions on the distribution coefficients was taken into consideration.K0, Kb, ΔH, ΔF, and ΔS for the dissociation of the anilinium ion were evaluated.

Viscometric, thermodynamic and theoretical DFT studies of dl-2-aminobutyric acid in aqueous sodium nitrate solutions at different temperatures

2018 ◽  
Vol 271 ◽  
pp. 599-609
Author(s):  
Manuel Páez Meza ◽  
Dairo Pérez Sotelo ◽  
María Vergara Hernández ◽  
Enoc Arciria Pico ◽  
Said Figueredo López
Keyword(s):  
Sodium Nitrate ◽  
Aminobutyric Acid ◽  
Dft Studies ◽  
Aqueous Sodium ◽  
Different Temperatures ◽  
Nitrate Solutions

Thermodynamics of transfer of glycine, diglycine, and triglycine from water to aqueous solutions of urea, glycerol, and sodium nitrate

1988 ◽  
Vol 66 (3) ◽  
pp. 461-468 ◽  
Author(s):  
Himansu Talukdar ◽  
Sibaprasad Rudra ◽  
Kiron K. Kundu
Keyword(s):  
Sodium Nitrate ◽  
Regular Function ◽  
Scaled Particle Theory ◽  
Aqueous Mixtures ◽  
Free Energies ◽  
Thermodynamics Of Transfer ◽  
Different Temperatures ◽  
Composition Profiles ◽  
Cavity Effect ◽  
Nitrate Solutions

Standard free energies [Formula: see text] and entropies [Formula: see text] of transfer of glycine (G), diglycine (DG), and triglycine (TG), from water to aqueous mixtures of glycerol (GL) and urea (UH) have been determined from solubility measurements at different temperatures. This was also extended to an ionic cosolvent system like aqueous sodium nitrate solutions for G and DG. The observed [Formula: see text] and [Formula: see text]–composition profiles, as well as those obtained after correcting for the "cavity effect" as estimated by scaled particle theory (SPT), were examined in the light of various interactions. The corrected [Formula: see text]and [Formula: see text] values show a regular function of the peptide chain length of the amino acids and impart useful information regarding the involved relative structural effects of these ionic and non-ionic cosolvents.

Study of the Solubility and Transfer Thermodynamics of d,l-Phenylalanine in Aqueous Sodium Chloride and d,l-Serine in Aqueous Sodium Nitrate Solutions

2016 ◽  
Vol 45 (12) ◽  
pp. 1755-1772 ◽  
Author(s):  
Samiran Mondal ◽  
Sanjay Roy ◽  
Srabani Ghosh ◽  
Kalachand Mahali ◽  
Bijoy Krishna Dolui
Keyword(s):  
Sodium Chloride ◽  
Sodium Nitrate ◽  
Aqueous Sodium ◽  
Transfer Thermodynamics ◽  
Nitrate Solutions
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