A note on Guggenheim’s theory of strictly regular binary liquid mixtures

This note attempts to revise and extend the formulae proposed by Guggenheim (1935) in his theory of a special (hypothetical) type of liquid mixture which, in the account of Guggenheim’s paper given by Fowler (1936), is called strictly regular. According to the definitions in these sources a binary liquid mixture is said to be strictly regular if (i) there is no volume change on mixing, whatever the relative amounts of the two components, (ii) it possesses a definite co-ordination number, г say, so that each molecule, of either kind, in the liquid has precisely г (nearest) neighbours.

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Evaluation of Excess Thermodynamic Parameters in a Binary Liquid Mixture (Cyclohexane +O-Xylene) at Different Temperatures

E-Journal of Chemistry ◽

10.1155/2010/536784 ◽

2010 ◽

Vol 7 (3) ◽

pp. 927-934 ◽

Cited By ~ 4

Author(s):

K. Narendra ◽

P. Narayanamurthy ◽

CH. Srinivasu

Keyword(s):

Excess Enthalpy ◽

Composition Range ◽

Liquid Mixture ◽

Weak Interactions ◽

Adiabatic Compressibility ◽

Liquid Mixtures ◽

Binary Liquid Mixture ◽

Binary Liquid ◽

Different Temperatures ◽

Excess Internal Pressure

The ultrasonic velocity, density and viscosity in binary liquid mixture cyclohexane witho-xylene have been determined at different temperatures from 303.15 to 318.15 K over the whole composition range. The data have been utilized to estimate the excess adiabatic compressibility (βE), excess volumes (VE), excess intermolecular free length (LfE), excess internal pressure (πE) and excess enthalpy (HE) at the above temperatures. The excess values have been found to be useful in estimating the strength of the interactions in the liquid mixtures. Analysis of these parameters indicates that there are weak interactions among the components of the binary mixtures.

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Theoretical Evaluation of Internal Pressure in Ternary and Sub-Binary Liquid Mixtures at Various Temperatures

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.4.82 ◽

2013 ◽

Vol 4 ◽

pp. 82-95

Author(s):

J. Madhumitha ◽

N. Santhi ◽

G. Alamelumangai ◽

M. Emayavaramban

Keyword(s):

Internal Pressure ◽

Liquid Mixture ◽

Liquid Mixtures ◽

Butyl Alcohol ◽

Molar Refraction ◽

Binary Liquid Mixtures ◽

Theoretical Evaluation ◽

Binary Liquid ◽

Experimental Values ◽

Internal Pressures

The Internal pressures of Ternary and their Sub-Binary liquid mixtures of benzene(1) + hexane(2) + sec-butyl alcohol(3) were calculated using density, velocity and molar refraction from the temperature range of 303.15K-318.15K. For the Binary liquid mixtures, the Experimental Internal pressure values were correlated through an equation proposed by Andiappan et.al. For the Ternary liquid mixture, the Experimental Internal pressure values were correlated through an equation proposed by us. The Experimental values and the Theoretical values are in close agreement with each other

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