EXCESS THERMODYNAMIC PROPERTIES OF SOME BINARY-SOLUTIONS OF ETHYLBENZENE PLUS N-ALKANES

Some thermodynamic properties (excess enthalpies, entropies and Gibbs energies of mixing) have been determined for binary solutions of ethyl benzene + n-alkanes (eicosane, C20H42; heneicosane, C21H44; docosane, C22H46; tricosane, C23H48; and tetracosane, C24H50), at crystallizatio n temperatures in the (260-305) K range. The calculated properties var y with the chain lengths of the n-alkanes, and show the alternation ef fect occurring in the general behaviour of n-alkanes. Simple analytica l expressions have been established to describe the excess properties. (C) 1997 Elsevier Science B.V.