The activity coefficients of some polar solutes in benzene

Abstract

Cryoscopy was used to determine the low concentration (< 1 molal) stoichiometric molal activity coefficients of: chlorobenzene, m-dichlorobenzene, o-dichlorobenzene, and nitromethane in benzene. The data were corrected to a fixed temperature (10 °C) by using pre-existing heat of mixing data. The activity coefficients all showed negative deviations from Henry's law ideality, and some of the factors that contribute to this non-ideality were discussed.