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Binary system
About: Binary system is a research topic. Over the lifetime, 5788 publications have been published within this topic receiving 97882 citations.
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TL;DR: In this article, the authors measured densities and viscosities for three binary mixtures formed by propan-2-ol, 1-chlorobutane, and acetonitrile at (293.15, 303, 313, and 323.15) K.
Abstract: Densities and viscosities were measured for the three binary mixtures formed by propan-2-ol, 1-chlorobutane, and acetonitrile at (293.15, 303.15, 313.15, and 323.15) K. Excess volumes and viscosity deviations from the mole fraction average were derived. The kinematic viscosities were compared with McAllister's model.
30 citations
TL;DR: The surface composition of the H2SO4/H2O binary system in the temperature range (298−170 K) has been studied using differentially pumped Auger electron and X-ray photoelectron spectrometers designed to perform under equilibrium conditions (PH2O ≈ 10-6−10-4 Torr).
Abstract: The surface composition of the H2SO4/H2O binary system in the temperature range (298−170 K) has been studied using differentially pumped Auger electron and X-ray photoelectron spectrometers designed to perform under equilibrium conditions (PH2O ≈ 10-6−10-4 Torr). Both spectroscopies have been calibrated on pure sulfuric acid solutions to illustrate their ability to provide accurate atomic stoichiometries within the near-surface region. In the case of AES this ability has also been extended as a tool for the study of the surface composition in the H2SO4/H2O binary system under equilibrium conditions. Compositional analysis of this acidified surface indicates that under these experimental conditions the chemical compositions of the bulk and near-surface region are equal within experimental error. Mass spectrometric analysis of the vapor composition indicates equilibration between the acid solution and D2O.
30 citations
TL;DR: In this paper, it was shown that the SPHCT equation of state describes the same types of binary phase behavior around the van Laar point as van der Waals and the Redlich-Kwong equation.
Abstract: It is shown that the SPHCT equation of state describes qualitatively the same types of binary phase behavior around the van Laar point as the van der Waals and the Redlich–Kwong equation of state. A continuous transition is possible from a binary system with a van Laar point into binary systems that show type II, III, IV and IV* phase behavior. The global phase diagram turns out to be a helpful tool in the exploration of these different types of phase behavior. Special attention is paid to the link between moving across the global phase diagram and the resulting changes in the phase behavior of the corresponding binary mixtures. We will focus on the temperature‐composition behavior of the critical lines in the binary mixtures. This temperature‐composition behavior is very important if one wants to make an experimental verification of the van Laar point or type IV* phase behavior.
30 citations
TL;DR: In this paper, the Redlich−Kister equation was used to obtain the binary coefficients and estimate the standard deviations between the experimental and calculated quantities for N-methylacetamide with various compositions.
Abstract: Densities and viscosities have been measured at 308.15 K over the entire range of composition for N-methylacetamide with ethylene glycol, diethylene glycol, triethylene glycol, poly(ethylene glycol)-200, and poly(ethylene glycol)-300. From the experimental data, excess molar volumes (VE) and deviations in viscosity (Δη) have been calculated, and the deviations are fitted to a Redlich−Kister equation to obtain the binary coefficients and estimate the standard deviations between the experimental and calculated quantities. The values of VE are negative whereas the values of Δη are positive over the entire composition range.
30 citations