The new simple extended corresponding-states principle: vapor pressure and second virial coefficient

2002 ◽  
Vol 57 (8) ◽  
pp. 1439-1449 ◽  
Author(s):  
H.W. Xiang
Keyword(s):  
Vapor Pressure ◽  
Virial Coefficient ◽  
Second Virial Coefficient ◽  
Corresponding States ◽  
Extended Corresponding States ◽  
Corresponding States Principle

The second virial coefficients of mixed organic vapours

1952 ◽  
Vol 210 (1103) ◽  
pp. 557-564 ◽  
Keyword(s):  
Hydrogen Bonding ◽  
Binary Mixtures ◽  
Diethyl Ether ◽  
Virial Coefficient ◽  
Second Virial Coefficient ◽  
Virial Coefficients ◽  
Corresponding States ◽  
Linear Variation ◽  
Second Virial Coefficients

The second virial coefficients of some binary mixtures of organic vapours have been measured at temperatures between 50 and 120° C. Mixtures of n -hexane with chloroform and of n -hexane with diethyl ether show a linear variation of second virial coefficient with composition. This is shown to be in accordance with prediction from the principle of corresponding states. Mixtures of chloroform with diethyl ether show a linear variation at 120° C, but pronounced curvature at lower temperatures. This is interpreted quantitatively as being due to association by hydrogen bonding with an energy of 6020 cal/mole.

On estimating self-diffusivities by the extended corresponding states principle

2014 ◽  
Vol 108 ◽  
pp. 134-153 ◽  
Author(s):  
Octavio Suarez-Iglesias ◽  
Ignacio Medina ◽  
Susana Luque ◽  
Consuelo Pizarro ◽  
Julio L. Bueno
Keyword(s):  
Corresponding States ◽  
Extended Corresponding States ◽  
Corresponding States Principle

scholarly journals Acentric factor estimation from the corresponding states principle

2006 ◽  
Vol 71 (3) ◽  
pp. 213-221 ◽  
Author(s):  
Dusan Grozdanic
Keyword(s):  
Vapor Pressure ◽  
Corresponding States ◽  
Acentric Factor ◽  
Pressure Equation ◽  
Estimation Procedures ◽  
Vapor Pressure Equation ◽  
Analytical Expressions ◽  
Corresponding States Principle ◽  
Factor Estimation

Acentric factor estimation from the corresponding states principle was conducted. The reported values, or analytical expressions, of the functions f(0), f(1) and f(2) are presented. The tabulated values of f(0), f(1) and f(2) by the Brandani relation of the Wagner type of vapor pressure equation are correlated. The estimation procedures are tested on 44 nonpolar substances. The Ambrose and Walton expressions have the best predictive characteristics.

Extended law of corresponding states: square-well oblates

2021 ◽  
Author(s):  
Miguel Gómez de Santiago ◽  
Peter Gurin ◽  
Szabolcs Varga ◽  
Gerardo Odriozola
Keyword(s):  
Short Range ◽  
Virial Coefficient ◽  
Second Virial Coefficient ◽  
Corresponding States ◽  
Pair Potentials ◽  
Single Master Curve ◽  
Law Of Corresponding States ◽  
Square Well ◽  
Reduced Density ◽  
Reduced Temperature

Abstract The vapour-liquid coexistence collapse in the reduced temperature, Tr=T/Tc, reduced density, ρr= ρ/ρc, plane is known as a principle of corresponding states, and Noro and Frenkel have extended it for pair potentials of variable range. Here, we provide a theoretical basis supporting this extension and show that it can also be applied to short-range pair potentials where both repulsive and attractive parts can be anisotropic. We observe that the binodals of oblate hard ellipsoids for a given aspect ratio (κ=1/3) with varying short-range square-well interactions collapse into a single master curve in the Δ B*2--ρr plane, where Δ B*2= (B2(T)-B*2(Tc))/v0, B2 is the second virial coefficient, and v0 is the volume of the hard body. This finding is confirmed by both REMC simulation and second virial perturbation theory for varying square-well shells, mimicking uniform, equator, and pole attractions. Our simulation results reveal that the extended law of corresponding states is not related to the local structure of the fluid.

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