Abstract
For three derivatives of 4-amino antipyrene, density, viscosity and ultrasonic velocity are measured at 318.15 K in 1,4-dioxane (DO) and dimethylformamide (DMF). From these experimental data, various acoustical properties such as specific impedance ( Z), isentropic compressibility ( κ s), Rao’s molar sound function ( R m), the van der Waals constant ( b), molar compressibility ( W), intermolecular free length ( L f), relaxation strength ( r), relative association ( R A), free volume ( V f), etc. and apparent molar volume and apparent molar compressibility were calculated. The results are interpreted in terms of molecular interactions occurring in the solutions. It is observed that in 1,4-dioxane solutions, solute–solute interactions exist whereas solvent–solute interactions predominant in DMF system.
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