Significant-Structure Theory of Binary Mixtures. II

The significant-structure theory has been successfully applied to the three binary systems involving carbon tetrachloride, benzene, and cyclohexane. In the first paper, the system carbon tetrachloride—cyclohexane was discussed. In this paper the other two systems, carbon tetrachloride—benzene and cyclohexane—benzene, are considered. The excess properties have been calculated on mixing at constant pressure as well as on mixing at constant volume. By taking account of the fact that the parameters in our theory are concentration dependent, a partition function for mixtures can be formulated in a similar way to those for single liquids.