ISSN:
1572-8927
Keywords:
Molecular interaction
;
excess Gibbs free energy of mixing
;
ideal associated model
;
equilibrium constants
;
thermodynamics of mixtures
;
binary mixtures
;
interactions in solutions
;
applicability of Flory theory
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The excess Gibb's free energy of mixing, GE, for ethyl iodide+toluene at 25°C have been obtained from the measured vapor pressuure data. The HE and GE values for ethyl iodide+toluene are positive throughout the ethyl iodide concentration range and GE〉HE. The results have been analyzed in terms of Flory and ideal associated model theory of nonelectrolyte solutions. It has been observed that the ideal associated model approach which assumes the presence of AN and A2B molecular species describes well (within±10 J-mol−1 in the worst case) the general dependence of HE on XA (mole fraction of ethyl iodide) over the whole composition range for ethyl iodide+toluene mixtures. The equilibrium constants for A+A⇆ AB and 2A+B⇆A2B reactions along with the enthalpies of formation of AB and A2B molecular species have been calculated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00650807
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