Thermodynamics of binary mixtures with strongly negative deviations from Raoult's Law. X. linear alkanoate + CHCl3or + 1,1,2,2-tetrachloroethane

2005 ◽  
Vol 43 (4) ◽  
pp. 317-332 ◽  
Author(s):  
Juan Antonio González ◽  
Ismael Mozo ◽  
Isaías García de la Fuente ◽  
José Carlos Cobos
2013 ◽  
Vol 11 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Mariana Hristova

AbstractThe flash points of three binary mixtures, containing n-heptane, o-xylene, m-xylene and ethylbenzene, were measured by Pensky-Martens closed cup tester. The experimental data were compared with the calculated values using Liaw’s Model with the application of Raoult’s Law and Wilson equation. These equations were in good qualitative agreement.


1945 ◽  
Vol 23b (6) ◽  
pp. 269-274 ◽  
Author(s):  
B. C. Green ◽  
J. W. T. Spinks

Liquid–vapour composition curves have been determined for the systems aniline–monoethylaniline, monoethylaniline–diethylaniline, and aniline–diethylaniline. The experimental curve for aniline–monoethylaniline agrees quite well with the curve calculated using Raoult's law. However, the experimental curves for monoethylaniline–diethylaniline and aniline–diethylaniline show wide deviations from the calculated. From the shape of the experimental curves it appears that good separations of aniline, ethylaniline, and diethylaniline from one another may be effected by distillation with a reasonably good column. Improved separation could be obtained by distillation at reduced pressure.


2021 ◽  
Author(s):  
Jingsong Huang ◽  
Panchapakesan Ganesh ◽  
Bobby G. Sumpter ◽  
David S. Sholl ◽  
Kunlun Hong

We put forth a simple and yet practical theoretical model generalized from Raoult’s law and Henry’s law and show that it can be reduced to these two laws under limiting conditions. The model entertains a hybrid parameter h_B with activity coefficient bundled into it, which smoothly bridges the p_B^* and K_B coefficients in Raoult’s law and Henry’s law. The value of h_B falls in the interval of [K_B, p_B^*] or [p_B^*, K_B] in the case of negative or positive deviation from Raoult’s law, respectively. We uncover an overlapping rule for the ranges of h_A and h_B, which binary mixtures must obey to form azeotropes. We also provide straightforward ways to analyze the characteristic mole fraction and pressure for azeotropes and to understand the relative positions of vapor composition curves with respect to the liquid counterparts. We rely heavily on experimental data available in the literature for representative binary mixtures with both negative and positive deviations from Raoult’s law to illustrate the algebraic derivations. The knowledge gained is useful in the analysis of experimental data from vapor-liquid equilibrium measurements and possess pedagogical merit in various relevant fields.


2021 ◽  
Author(s):  
Jingsong Huang ◽  
Panchapakesan Ganesh ◽  
Bobby G. Sumpter ◽  
David S. Sholl ◽  
Kunlun Hong

We put forth a simple and yet practical theoretical model generalized from Raoult’s law and Henry’s law and show that it can be reduced to these two laws under limiting conditions. The model entertains a hybrid parameter h_B with activity coefficient bundled into it, which smoothly bridges the p_B^* and K_B coefficients in Raoult’s law and Henry’s law. The value of h_B falls in the interval of [K_B, p_B^*] or [p_B^*, K_B] in the case of negative or positive deviation from Raoult’s law, respectively. We uncover an overlapping rule for the ranges of h_A and h_B, which binary mixtures must obey to form azeotropes. We also provide straightforward ways to analyze the characteristic mole fraction and pressure for azeotropes and to understand the relative positions of vapor composition curves with respect to the liquid counterparts. We rely heavily on experimental data available in the literature for representative binary mixtures with both negative and positive deviations from Raoult’s law to illustrate the algebraic derivations. The knowledge gained is useful in the analysis of experimental data from vaporliquid equilibrium measurements and possess pedagogical merit in various relevant fields.


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