A Study of Some Physical Properties for Binary System of Cyclohexane with n-decane and 1-pentanol at Different Temperatures

Baghdad Science Journal

doi:10.21123/bsj.8.2.348-358

Abstract

mixtures of cyclohexane + n-decane and cyclohexane + 1-pentanol have been measured at 298.15, 308.15, 318.15, and 328.15 K over the whole mole fraction range. From these results, excess molar volumes, VE , have been calculated and fitted to the Flory equations. The VE values are negative and positive over the whole mole fraction range and at all temperatures. The excess refractive indices nE and excess viscosities ?E have been calculated from experimental refractive indices and viscosity measurements at different temperature and fitted to the mixing rules equations and Heric – Coursey equation respectively to predict theoretical refractive indices, we found good agreement between them for binary mixtures in this study. The variation of these properties with composition and temperatures of the binary mixtures are discussed in terms of molecular interactions.

Highlights

Multi component excess molar cyclohexane, and ether alkanol, shows properties, necessary for process physical chemical properties between design, are normally estimated from protic and dipolar aprotic solvents [2].binary mixing values
The excess molar volumes for binary mixtures were calculated from the following relation
We found good agreement between the experimental values of the refractive indices for the two binary mixtures studied in this work and with predicted values using the equations of mixing rules at 298.15K, 308.15K, 318.15K,and 328.15K

Summary

Introduction

Multi component excess molar cyclohexane, and ether alkanol, shows properties, necessary for process physical chemical properties between design, are normally estimated from protic and dipolar aprotic solvents [2]. Studies on excess functional of role played by solvents in chemistry binary liquid mixtures are of has long been recognized. The model considerable importance in of thermo physical properties of mixed understadying the nature of molecular solvent has received increasing interactions. The alkane (normal or cyclo) mixtures of cyclohexane + n- decane the simplest class of organic and cyclohexane +1- pentanol have compounds, contain no functional been measured. Group, and smaller alkanes play an important role as model molecules for the behavior of large compounds. To determine the extent attention as unimportant tool both at and type of such interaction , the molecular level and for practical excess molar volume, refractive applications[1].

Methods

Results

Conclusion