A Study of Excess Molar Enthalpies and Excess Molar Volumes of Binary Mixtures of 1-Chloropentae + 1-Alkanol (from 1-Butanol to 1-Octanol) at 25 deg C

摘要

Excess molar enthalpies H~ and e'xcess molar volumes V~ at 25°C and nonnal atmospheric prcssure for the binary mixtures I-chloropentane + I-alkanol (from I-butanol to I-octanol) have been detennined using a Calvet microcalorimcter and from density measurements using a vibrating tube densimeter. The ~ values for all the mixtures are positive and V~ values are positive or negative depending on the mole fraction of the chloroalkane. Experimental H~ results are compared with the predictions ofUNIFAC group-contribution models proposed by Dang and Tassios and by Larsen et ~l., and are discussed in tenns of molecular interactions.