Abstract
Values of dielectric constant ( ' ) and dielectric loss ( ) have been experimentally determined for binary liquid mixtures of acetonitrile + methanol at 10.75 GHz microwave frequencies at 30 0 C. The values of ' and have been used to evaluate the loss tangent ( tan ), molar polarization (P12), apparent polarization (P2) and a.c. conductivity ( p ). From the studied system indicates that the solute-solvent type of interaction taking place. Density, viscosity and refractive index measurement of binary liquid mixtures were carried out at 30 0 C. The values of viscosity have been used to evaluate the activation energy (Ea). The surface tension has been experimentally determined for pure liquid and binary liquid mixtures at 30 0 C.These parameters have been used to explain the formation of 1:1 complex in the system.
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