Journal ArticleDOI
Solute‐Solute Interactions in Aqueous Solutions
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In this article, the authors interpreted solvent-solute interactions in aqueous solutions of nonelectrolytes using both lattice and distribution function theories of the dissolved state.Abstract:
Solute‐solute interactions in aqueous solutions of nonelectrolytes are interpreted using both lattice and distribution function theories of the dissolved state. Experimental activity data of high precision can be obtained from the literature for aqueous solutions of many nonelectrolytes. If the logarithm of the solvent activity coefficient (γ1) is expressed as a power series in the mole fraction of the solute (x2), lnγ1 = Bx22 + Cx23 + ···, then the coefficients B and C can be determined analytically from the experimental measurements. Values of B were obtained for 52 aqueous mixtures; values of C were obtained for 39 of these mixtures. The solutes considered include aliphatic alcohols, amines, amides, ketones, fatty acids, amino acids, and sugars. In some cases, experimental data were available from which the temperature dependence of the quantities B and C could also be determined. The effect of solute size on the coefficients B and C was investigated using the lattice theories of Flory, Huggins, and Gu...read more
Citations
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Journal ArticleDOI
The effect of the side chain structures on the energy of intermolecular interactions of α-amino acids with some formamides in aqueous solutions at T = 298.15 K
TL;DR: In this paper, the effect of amino acid side chains on the thermodynamics of their interaction with the formamides molecules in aqueous solutions has been investigated and the standard enthalpies of solution and transfer of l -glutamine from water to a mixed solvent as well as the enthalpy coefficients of pairwise interactions were calculated.
Journal ArticleDOI
Calorimetric and isentropic compressibility studies on (saccharide/methyl glycoside/deoxy-derivative + KH2PO4 + H2O) solutions at different temperatures
TL;DR: In this article, the authors measured the heat of dilution of various saccharides and their derivatives in water and in (0.05, 0.25, 0, 0., 0.50, 1.00 and 1.25) mol kg−1 aqueous potassium phosphate monobasic (KH2PO4) solutions at (288.15, 298.15 and 318.15) K.
Journal ArticleDOI
Experimental and Computer Simulation Studies of Solute-Solute Interactions in Liquid Chromatography
TL;DR: In this paper, solvent-solute interactions due to self-association as well as mixed association are shown to arise for the steroids cortisone, tetrahydrocortisol, tetrahedrocortisone and methylprednisolone.
Journal ArticleDOI
Solvation Behavior of Glycine, l-Alanine, and l-Valine in Aqueous Solutions of Triammonium Citrate at Different Temperatures with Reference to Speeds of Sound Measurements
TL;DR: In this article, the speeds of sound measurements were carried out for investigating the interactions of glycine, l-alanine, and l-valine in TAC solutions, and the pair and triplet interaction coefficients were also calculated.
Journal ArticleDOI
Geometrical Description of Protein Structural Motifs
TL;DR: A geometrical method that can identify secondary structural motifs in proteins via angular correlations using crystal structure coordinates and a signature termed Δβ which describes the change in angular correlation as the span of nearest neighbor residues increases is presented.
References
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Book
Molecular theory of gases and liquids
TL;DR: Molecular theory of gases and liquids as mentioned in this paper, molecular theory of gas and liquids, Molecular theory of liquid and gas, molecular theories of gases, and liquid theory of liquids, مرکز
Book ChapterDOI
Some factors in the interpretation of protein denaturation.
TL;DR: The chapter reviews that the denaturation is a process in which the spatial arrangement of the polypeptide chains within the molecule is changed from that typical of the native protein to a more disordered arrangement.
Journal ArticleDOI
Thermodynamics of High Polymer Solutions
TL;DR: In this paper, a statistical treatment of high polymer solutions has been carried out on the basis of an idealized model, originally proposed by Meyer, which is analogous to the one ordinarily assumed in the derivation of the ''ideal'' solution laws for molecules of equal size.
Journal ArticleDOI
Free Volume and Entropy in Condensed Systems III. Entropy in Binary Liquid Mixtures; Partial Molal Entropy in Dilute Solutions; Structure and Thermodynamics in Aqueous Electrolytes
Henry S. Frank,Marjorie W. Evans +1 more
TL;DR: The first and second papers in this series, which make it possible to interpret entropy data in terms of a physical picture, are applied to binary solutions, and equations are derived relating energy and volume changes when a solution is formed to the entropy change for the process as discussed by the authors.
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