A model of nonelectrolytic behaviour: activity coefficients

1992 ◽  
Vol 70 (6) ◽  
pp. 1631-1634 ◽  
Author(s):  
Prem p. Singh ◽  
Sanjeev Maken
Keyword(s):  
Activity Coefficient ◽  
Binary Mixtures ◽  
Activity Coefficients ◽  
Molecular Complexes ◽  
Text Data ◽  
Molar Volumes

A model is presented for binary mixtures of nonelectrolytes that reproduces successfully the activity coefficient (γi, γj, xi) data for even those (I + j) mixtures that are known to be characterized by the presence of 1:1 or 1:1 and 1:2 molecular complexes or have components that differ appreciably in their molar volumes when only limited [Formula: see text] or [Formula: see text] or [Formula: see text] data are available).

scholarly journals Flash point of organic binary mixtures containing alcohols: experiment and prediction

2013 ◽  
Vol 11 (3) ◽  
pp. 388-393 ◽  
Author(s):  
Mariana Hristova ◽  
Dimitar Damgaliev
Keyword(s):  
Experimental Data ◽  
Activity Coefficient ◽  
Binary Mixtures ◽  
Activity Coefficients ◽  
Thermodynamic Model ◽  
Flash Point ◽  
Wilson Equation ◽  
Nrtl Equation

AbstractThe flash points of three organic binary mixtures containing alcohols were measured in the present work. The experimental data was obtained using the Pensky-Martens closed cup tester. The experimental data were compared with the values calculated by the Liaw model. Activity coefficients were calculated by the Wilson equation and NRTL equation. The accuracy of predicted flash point values is dependent on the thermodynamic model used for activity coefficient.

Comparison of different methods for estimating activity coefficients in binary mixtures of hydrocarbons

1981 ◽  
Vol 46 (7) ◽  
pp. 1541-1548
Author(s):  
Vladimír Dohnal
Keyword(s):  
Activity Coefficient ◽  
Binary Mixtures ◽  
Activity Coefficients ◽  
Regular Solution Model ◽  
Pure Component ◽  
Group Contribution ◽  
Coefficient Estimation ◽  
The Mean ◽  
Group Contribution Methods ◽  
The One

The accuracy and reliability of a number of different methods for predicting activity coefficients in binary solutions of hydrocarbons was tested. Various modifications of the regular solution model and of the one-parameter Wilson equation and various group-contribution methods were applied to a set of 53 binary mixtures of hydrocarbons of different types. The agreement of the calculated and experimental dependence of activity coefficients on composition was considered. On using the best methods requiring the knowledge of pure component properties only, it is necessary to expect on the average an error of 7% in the value of activity coefficient. When using the group-contribution methods, which employ condensed information on related systems for the prediction, the mean error in the activity coefficient estimation lies about 4%.

Excess molar volumes of n-alkanol (C1-C5) binary mixtures with acetonitrile

1986 ◽  
Vol 31 (2) ◽  
pp. 152-154 ◽  
Author(s):  
Jagjit S. Sandhu ◽  
Ashok K. Sharma ◽  
Ramesh K. Wadi
Keyword(s):  
Binary Mixtures ◽  
Excess Molar Volumes ◽  
Molar Volumes

scholarly journals Assessment of certain ionic liquids for separation of binary mixtures based on gamma infinity data measurements

RSC Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 7092-7107 ◽  
Author(s):  
M. Karpińska ◽  
M. Wlazło ◽  
D. Ramjugernath ◽  
P. Naidoo ◽  
U. Domańska
Keyword(s):  
Ionic Liquids ◽  
Binary Mixtures ◽  
Activity Coefficients ◽  
Thermodynamic Functions ◽  
Partition Coefficients

Limiting activity coefficients for 64 solutes in [BzMIM][NTf2] and [BzMIM][DCA], the gas–liquid partition coefficients, KL, thermodynamic functions and selectivity for hexane/hex-1-ene, cyclohexane/cyclohexene and ethylbenzene/styrene separation were presented.

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