Journal•ISSN: 0031-9104
Physics and Chemistry of Liquids
Taylor & Francis
About: Physics and Chemistry of Liquids is an academic journal published by Taylor & Francis. The journal publishes majorly in the area(s): Solubility & Viscosity. It has an ISSN identifier of 0031-9104. Over the lifetime, 2518 publications have been published receiving 20603 citations.
Topics: Solubility, Viscosity, Molar volume, Aqueous solution, Mole fraction
Papers published on a yearly basis
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TL;DR: In this article, the sound velocity in n-heptane has been measured up to 2634 bar and at temperatures from 185 to 310 K by the phase comparison pulse-echo method.
Abstract: The sound velocity in toluene has been measured up to 2634 bar and at temperatures from 173 to 320 K using the pulse-echo overlap method. The sound velocity in n-heptane has been measured up to 2634 bar and at temperatures from 185 to 310 K by the phase comparison pulse-echo method. The density, the isothermal compressibility, the isobaric thermal expansion and the specific heat at constant pressure of both liquids have been evaluated from the measured sound velocity, following the method of Davis and Gordon. From a comparison of the calculated densities with those obtained previously from direct measurements, it is concluded that the method is very suitable for precise determination of liquid densities under elevated pressures.
154 citations
TL;DR: In this article, the Modified Wilson equation was found to be the better two-parameter mathematical representation with deviations between experimental and back-calculated values being on the order of ± 3% or less.
Abstract: Experimental solubilities are reported for carbazole dissolved in binary mixtures containing tetrahydropyran with n-hexane, n-heptane, clyclohexane, isooctane, n-hexadecane and t-butylcyclohexane at 25°C. Results of these measurements, along with published carbazole solubilities in ten alkane + dibutyl ether mixtures, are used to test two mathematical representations based upon the combined Nearly Ideal Binary Solvent (NIBS)/Redlich-Kister equations and Modified Wilson model. For the systems studied, the Modified Wilson equation is found to be the better two-parameter mathematical representation with deviations between experimental and back-calculated values being on the order of ± 3% or less. The NIBS/Redlich-Kister representation requires up to four adjustable “curve-fit” parameters to describe the solubility data.
153 citations
TL;DR: In the field of physical chemistry, one of the most popular areas of research has been the study of the structure and behaviour of water and aqueous solutions as discussed by the authors, for both technical and biological reasons, but it is also true that the complexity of water as a liquid provides its own motive to the rcsearch worker.
Abstract: During the past 20 years or so one of the regions of conspicuous growth in the field of physical chemistry has been the study of the structure and behaviour of water and aqueous solutions. There are practical reasons, for example technical and biological, for this interest, but it is also true that the complexity of water as a liquid provides its own motive to the rcsearch worker. It is unlikely that we would spend so much time in the study of water if it were as simple a liquid as Argon. However, strange though the behaviour of liquid water is, it is probably not as strange as it has sometimes been thought to be. The thermal “anomalies” of water and the abnormal “Poly-water” Seem rather likely to fade out of the scientific scene, as have other stimulating but nonviable scientific myths.
149 citations
TL;DR: In this paper, the variations of dynamic viscosity and density versus temperature and pressure for the dense fluids (density > 200 kg · m−3) are described, and a model based on the free volume concept is presented.
Abstract: This article presents a model based on the free volume concept, which describes the variations of dynamic viscosity and density versus temperature and pressure for the dense fluids (density > 200 kg · m−3). This model involves 6 constants for each pure compound: 3 for viscosity and 4 for density (1 constant is common to both quantities). Moreover if the viscosity and the density are known at a pressure and temperature of reference, it is sufficient to use 4 constants per pure compound. If the density is assumed to be known the model fits the viscosity data with an average absolute deviation of 3.8% for 3297 data corresponding to 41 very different pure compounds (alkanes, alkylbenzenes, cycloalkanes, alcohols, carbon dioxide, refrigerants). If the pressure is lower than 110MPa the average absolute deviation is 2.8% for viscosity (2977 points). The model gives also good results for water (3.6%). If the density is unknown, for pressures lower than 110MPa the model represents viscosity with an averag...
122 citations
TL;DR: In this paper, the authors present experimental results for partial molar volumes and viscosities of aqueous solutions of α-dl-aminobutyric acid, dl-norvaline and dl−norleucine at 288.15, 293.15 and 303.15 K. According to the usual hydrophobicity criteria, the amino acids considered do not have a hydrophobic character and their behavior is dominated by the polar groups.
Abstract: In this work, we present experimental results for partial molar volumes and viscosities of aqueous solutions of α-dl-aminobutyric acid, dl-norvaline and dl-norleucine at 288.15, 293.15, 298.15 and 303.15 K. The thermodynamic behavior of aqueous amino acid solutions is compared with that reported for glycine and α-alanine in water and is discussed in terms of group additivity and electrostriction. The temperature dependence of the infinite dilution partial molar volumes and the B viscosity coefficients are interpreted in terms of amino acid hydration. According to the usual hydrophobicity criteria, the amino acids considered do not have a hydrophobic character and their behavior is dominated by the polar groups.
120 citations