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In relation to this article, we declare that there is no conflict of interest.
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Received March 10, 2003
Accepted May 13, 2003
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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A Multi-Fluid Nonrandom Lattice Fluid Theory for Thermodynamic Properties of Hydrogen Bonding Fluids

School of Chemical Engineering & Institute of Chemical Processes, Seoul National University, Seoul 151-742, Korea 1Dept. of Chemical Engineering, Seoul National University of Technology, Seoul 139-743, Korea
Korean Journal of Chemical Engineering, September 2003, 20(5), 911-915(5), 10.1007/BF02697298
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Abstract

A unified equation of state theory valid from pure fluids to multicomponent associated mixtures of_x000D_ molecules having any number of hydrogen (proton) donor and acceptor groups was formulated. Under the fundamental assumption that the intermolecular forces are divided into physical and chemical forces, generalized Veytsman’s statistics for hydrogen bonding theory was combined with the nonrandom lattice-fluid theory. By the two-fluid approximation, configurational Helmholtz free energy was derived from the lattice of the Guggenheim combinatory. The Veytsman’s statistics extended for dimers and n-mers was employed for the description of some associating_x000D_ systems including organic acid.

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