Survismetric Evaluation of Excess Properties of Binary Mixtures of Diethyl Ether And Hexane At Varying Temperatures

Grace A. Cookey, Ngozi J. Maduelosi and Brave L. Tambari
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Grace A. Cookey: Department of Chemistry, Rivers State University, Port Harcourt, Nigeria
Ngozi J. Maduelosi: Department of Chemistry, Rivers State University, Port Harcourt, Nigeria
Brave L. Tambari: Department of Chemistry, Rivers State University, Port Harcourt, Nigeria

International Journal of Research and Innovation in Applied Science, 2023, vol. 8, issue 1, 75-80

Abstract: This study was designed to use survismeter to exploit the mixing behavior of a weak polar solvent (diethyl ether) and non-polar solvent (hexane) in varying compositions of diethyl ether and temperature. The densities and viscosities of binary mixed solvents of diethyl ether and hexane were evaluated at temperatures of 303, 313, 323 and 333 K and over varying compositions of diethyl ether using a single capillary pycnometer and Mansingh Survismeter respectively. The excess molar volumes (VE), excess viscosities (ɳE) and excess Gibb’s free energy (GE) of activation for viscous flow of the binary mixtures at the different temperatures were evaluated from the experimental parameters using Redlich Kister equation. The results show negative values of VE and GE at all mole fractions and temperatures. The ɳE values are positive at 303 and 313 K but negative at 323 and 333 K at all compositions respectively. These observations have been interpreted based on the molecular interactions between the components of the solvent mixtures and structural changes resulting from these interactions.

Date: 2023
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