Thermodynamics of Mobile Order theory. part 2. Extension of the basic model to prediction of anthracene solubilities in binary alkane plus alkoxyalcohol solvent mixtures

The unconventional solution model of Mobile Order, which has previously bee n shown to provide a very reasonable thermodynamic description of anthracen e solubilities and chemical potentials in binary alkane + monofunctional al cohol solvent mixtures, is extended to solutions containing an alkoxyalcoho l. The ether oxygen atom provides a second site for hydrogen-bond fixation of the hydroxylic proton. The alkoxyalcohol cosolvent is treated as a "pseu do" monofunctional alcohol, having a slightly larger self-association stabi lity constant to reflect the additional H-bond acceptor site. An expression derived from Mobile Order theory is found to predict published anthracene solubility data in 34 binary alkane + alkoxyalcohol solvent systems to with in an overall average absolute deviation of circa +/- 5.0%.