Molecular Radius, Molar Refraction, Polarizability and Internal Pressure Studies on THP + 1-Hexanol at Different Temperatures – Molecular Interactions

Abstract

Molar refraction (Rm), molecular radii (r), polarizability (α) and internal pressure (πi) values determined from the refractive index data for the binary liquid mixture of Tetrahydropyran (THP) with 1-hexanol have been measured at five temperatures (T=298.15, 303.15, 308.15, 313.15 and 318.15 K). The measured data utilized to evaluate the excess molar refraction (Rm E ), excess molecular radii (r E ), excess polarizability (α E ) and excess internal pressure (πi E ) along with their Redlich-Kister co-efficient and standard error values of the mixed solvents. The results show existence of weak molecular interaction in the mixture.