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
Effect of solute aggregation on solubilization
Seishi Shimizu,Yu Nagai Kanasaki +1 more
TL;DR: In this article, the contribution of self-association of hydrophobic solutes to solubility and solubilization of drugs has been investigated based on a rigorous statistical thermodynamic foundation.
Journal ArticleDOI
The hydrophobic effect: is water afraid, or just not that interested?
TL;DR: The hydrophobic signature of positive ∆C°P and negative ∆S° at room temperature has been interpreted in light of the importance of solvent cavity creation, solvent-excluded volume, and solute-water intermolecular forces, along with some unusual thermodynamic properties of pure water as discussed by the authors.
Journal ArticleDOI
Effects of alcohols on the stability and low-frequency local motions that control the slow changes in structural dynamics of ferrocytochrome c.
TL;DR: The thermal denaturation midpoint for ferrocytochrome c decreases with increase in alcohol, indicating that alcohol decrease the global stability of protein.
Journal ArticleDOI
Interactions between aminoacids and alcohols in water at 25 °C
TL;DR: The enthalpies of dilution of ternary aqueous solutions containing an alcohol (ethanol, n-propanol,n-butanol or tertbutanol) and an aminoacid or a peptide (glycine, glycyl- glycine or glycyl -glycyl-glycine) were measured at 25 °C and the results were used to calculate pair cross interaction parameters between solutes as discussed by the authors.
Journal ArticleDOI
Studies of electrical moment and thermodynamic properties of water in organic solvents at 298.15 K
TL;DR: In this article, the authors reported on measurements of static dielectric constant (e) at 1 kHz for solutions of water dissolved in organic solvents (benzene and 1,4-dioxane) of low dielectoric constant at 298.15 K. The results of these indicate presence of pair and triplet interactions (osmotic virial coefficients) for water molecules in the condensed phase.
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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