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Lattice model for ideal and regular solutions

In this appendix, we present a very brief outline of the lattice theory of ideal and regular solutions, developed mainly by Guggenheim (1952). The main reason for doing so is to emphasize the first-order character of the deviations from SI, equation (M.12) below. [Pg.354]

The system consists of M lattice sites occupied by a mixture of NA molecules A and NB molecules B, such that NA + NB = M (figure M.l). It is assumed that A and B have roughly the same size and that they can exchange sites without disturbing the structure of the lattice. [Pg.354]

For each configuration of the system, the canonical partition function is written as [Pg.354]

Therefore, the energy level E is determined by the single parameters NAB. Hence, we can replace the sum over j in (M.l), by a sum over all possible Nab, i-e-  [Pg.355]

Although g(NAB) is a very complicated function, we know that the sum over all g(NAB) must be the total number of configurations, i.e., [Pg.355]


See other pages where Lattice model for ideal and regular solutions is mentioned: [Pg.354]    [Pg.355]   


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Ideal model

Ideal solution

Ideal solutions and

Lattice models

Lattice models for solutions

Lattice regularization

Model idealized

Model solutions

Regular solution modelling

Regular solutions

Solutal model

Solute model

Solution ideal solutions

Solution lattice

Solution lattice model

Solutions, ideal regular

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