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Research Article Open Access

Study of Molecular Interactions in Binary Liquid Mixtures Containing Higher Alcohols at Different Temperatures


Ultrasonic velocity, density and viscosity are measured in binary liquid mixtures of cyclohexanone with n-heptanol, n-octanol and iso-octanol at temperatures (303.15, 308.15, 313.15 and 318.15) K over the entire range of composition. By using these data, parameters such as adiabatic compressibility, β, molar volume, V are calculated and some excess parameters like excess adiabatic compressibility, βE, excess molar volume, VE, deviation in viscosity, Δη, and excess Gibb’s free energy of activation for viscous flow, ΔG*E are calculated. The calculated excess and deviation functions have been fitted to the Redlich-Kister polynomial equation. The observed negative and positive excess values or deviation parameters have been explained in the light of intermolecular interactions present in these binary liquid mixtures.

M Sri Lakshmi, R Ramesh Raju, C Rambabu, GV Rama Rao, K Narendra

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