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
Volumetric and ultrasonic studies of solute–solute and solute–solvent interactions of N-acetyl glycine in aqueous sucrose solutions at different temperatures
TL;DR: In this paper, the partial molar volumes, transfer volumes, isentropic compression (β s ), and transfer k ϕ, S 0 ) were computed in terms of co-sphere overlap model.
Journal ArticleDOI
Effect of Sodium Acetate and Magnesium Acetate on the Solution Behavior of Some Amino Acids in Water at 298.15 K: A Compressibility Approach
TL;DR: In this paper, the partial molar adiabatic compressibility of transfer at infinite dilution, Δ t K 0 2,S, from water to aqueous sodium acetate and magnesium acetate (cosolutes) solutions has been determined from sound velocity, u, measurements at 298.15 K.
Journal ArticleDOI
Preferential configurations in the aqueous solutions of dicarboxylic acids, diols and hydroxyacids: Calorimetric studies at 298 K
TL;DR: In this article, the self-and cross-interaction coefficients of the virial expansion of the excess enthalpies of malonic acid derivatives, α,ω-dicarboxylic acids, β-diols and 2-hydroxyacids were determined by flow microcalorimetry at 298 K.
Journal ArticleDOI
Investigating the Association Mechanism between Rafoxanide and Povidone.
TL;DR: This study investigated the association between rafoxanide (RAF), a surface-active, poorly water-soluble drug, with a commercial hydrophilic polymer povidone and found that the association is a function of medium composition and could only take place in polar media, such as water.
Journal ArticleDOI
Solubility measurement and thermodynamic modeling of pantoprazole sodium sesquihydrate in supercritical carbon dioxide
TL;DR: In this paper , the solubility of Pantoprazole sodium sesquihydrate in supercritical carbon dioxide (ScCO2) is determined and reported at 308, 318, 328 and 338 K and at pressures between 12 and 27 MPa.
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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