Excess Molar Volume Of Binarymixtures From Iso-Propyl Alcohol, Tertiary- Butyl Alcohol And Toluene Liquids At 298K

Abstract

In this work, binary mixtures from Tertiary-Butyl alcohol (TBA), Toluene (TOL) and Iso-Propyl alcohol (IPA) were prepared at 298K. The mixtures physical properties which includes densities of mixtures (ρ) and pure components (ρ_I) and mole fractions of components (x) were equally measured at 298K. Excess molar volumes (V^E) were subsequently determined for each mixtures using the Ideal Association Model of the type A + B + A₂.

The results from the Tables and Figure showed positive excess molar volumes for the binary mixtures of Iso-Propyl Alcohol (IPA) and Tertiary- Butyl Alcohol (TBA), and Tertiary-Butyl Alcohol (TBA) and Toluene (TOL), while negative excess molar volumes were observed at some points in the Iso-Propyl Alcohol (IPA) and Toluene (TOL) binary mixtures at 298K. Consequently, strong self association and weak dipole-induced-dipole interaction were probably evident in the Iso-Propyl Alcohol (IPA) and Tertiary-Butyl Alcohol (TBA) Binary Mixture, and Tertiary-Butyl Alcohol (TBA) and Toluene (TOL) mixture, while weak self association and strong dipole-induced-dipole interaction was characteristic of the Iso-Propyl Alcohol (IPA) and Toluene (TOL) mixture. However, the Ideal Association Model of the type A + B + A₂ were observed to be adequate for interpreting the behaviours of the Tertiary-Butyl Alcohol (TBA) and Toluene (TOL) mixture, and Iso-Propyl Alcohol (IPA) and Tertiary-Butyl Alcohol (TBA) mixture.

KEY WORDS: Binary Mixture, Excess Molar Volume, Mole Fraction, Non-Ideal Behaviour, Temperature

Global Journal of Pure and Applied Sciences Vol.11(1) 2005: 107-111