EXCESS MOLAR VOLUMES OF N-PENTANOL + CUMENE, N-PENTANOL + 1,4-DIOXANE AND CUMENE + 1,4-DIOXANE AT DIFFERENT TEMPERATURES

Molar excess volumes (VE) and partial molar excess volumes (VE) are reported for non-electrolyte binary mixtures of n-pentanol + cumene, n-pentanol + 1,4-dioxane and cumene + 1,4-dioxane at four temperatures and over the whole concentration range. In these systems, the n-pentanol is a highly polar molecule with association in its pure state, while the others two show little polarity without association in their pure states. The results of VEare discussed in terms of the interactions between components. The Prigogine-Flory-Patterson model of solution thermodynamics has been used to predict VE. This work shows the importance of the three contributions Δkint, AΔPand ΔVFto VE. © 1990, Taylor & Francis Group, LLC. All rights reserved.