Title: Energy and entropy of mixing for a nonrandom mixture of monomers
Authors : Hocker, Thomas
Aranovich, Gregory L.
Donohue, Marc D.
Published in : Facetten der Thermodynamik : Festschrift zum 60. Geburtstag von Professor Ingo Müller
Editors of the parent work: Stuchtrup, Henning
Publisher / Ed. Institution : TU Berlin, Institut für Verfahrenstechnik
Publisher / Ed. Institution: Berlin
Issue Date: 1997
License (according to publishing contract) : Licence according to publishing contract
Type of review: Not specified
Language : English
Subjects : Lattice; Mixing; Theory; Properties
Subject (DDC) : 530: Physics
Abstract: The internal energy of mixing is the amount of heat exchanged with the surroundings when two or more components are mixed together at constant temperature and volume. Its temperature and composition dependency can be predicted from lattice-fluid theory, which relates those macroscopic properties to the (microscopic) local densities around each species, and the interaction energies between nearest neighbours. When vibrations of molecules and other kinetic effects are neglected, the internal energy becomes the configurational energy. First an expression for the configurational energy of a mixture of monomers is derived from Ono-Kondo lattice theory, which is subsequently used to calculate the energy and entropy of mixing. Expanding the latter expressions into a Taylor series reveals that the leading terms of the excess properties of the energy and entropy of mixing are identical with those obtained from Guggenheim's "Quasi-Chemical Theory", and Freed's "Lattice Cluster Theory".
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Publication type: Book Part
URI: https://digitalcollection.zhaw.ch/handle/11475/2837
Appears in Collections:Publikationen School of Engineering

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