Open AccessA Study of Some Physical Properties for Binary System of Cyclohexane with n-decane and 1-pentanol at Different Temperatures
Author(s) -
Baghdad Science Journal
Publication year - 2011
Publication title -
mağallaẗ baġdād li-l-ʿulūm
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.167
H-Index - 6
eISSN - 2411-7986
pISSN - 2078-8665
DOI - 10.21123/bsj.8.2.348-358
Subject(s) - cyclohexane , mole fraction , decane , thermodynamics , viscosity , binary number , chemistry , binary system , mixing (physics) , refractive index , molar volume , atmospheric temperature range , analytical chemistry (journal) , materials science , organic chemistry , mathematics , physics , arithmetic , optoelectronics , quantum mechanics
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.