SOLUBILITY OF ANTHRACENE IN BINARY ALCOHOL PLUS 1-PENTANOL SOLVENT MIXTURES AT 25-DEGREES-C - COMPARISON OF EXPRESSIONS DERIVED FROM MOBILEORDER THEORY AND THE KRETSCHMER-WIEBE ASSOCIATION MODEL

A relatively simple expression is developed for predicting the solubil ity of an inert crystalline solute in binary alcohol + alcohol solvent mixtures based upon the Kretschmer-Wiebe association model. The predi ctive accuracy of the newly-derived expression is compared to equation (s) derived previously from Mobile Order theory using experimental ant hracene solubilities in seven binary alcohol + I-pentanol solvent mixt ures at 25 degrees C, which were measured as part of the present inves tigation. Computations show that both models accurately describe the s olubility behavior of anthracene in the binary solvent systems studied . Average absolute deviations between observed and predicted values we re 0.9% and 1.4% for the Kretschmer-Wiebe and Mobile Order predictive equations, respectively.