Collect. Czech. Chem. Commun. 1990, 55, 1653-1659

A relation between excess volume and the form of the dependence of density on composition for binary liquid mixtures

Ivan Cibulka

Department of Physical Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6


A relation of excess volume and density is analyzed for binary liquid mixtures. It is shown that, unlike the ideal mixture, whose density is a monotonous function of composition, extremes may appear on the density curves of mixtures with non-zero excess volumes. Conditions for the existence of extremes are derived. Some examples are also given and briefly discussed.