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Speed of Sound in Binary Mixtures Containing Stearates and Nitrobenzene

R. Kavitha, S. Jayakumar, C. Ravichandran

We report the measurements of ultrasonic velocity in the binary mixtures of zinc stearate - nitrobenzene and calcium stearate - nitrobenzene at 303 K. The knowledge of the thermodynamic properties is essential in the chemical industry involving chemical seperations, heat transfer, mass transfer and fluid flow. It is used to evaluate the different thermo acoustical parameters along with the excess properties, the experimental data obtained is fitted with the models and percentage deviation is calculated. The sign, magnitude and variation in excess functions derived from physico-chemical properties reveal important information about the type of molecular interactions that are not usually seen from the variations in their excess volumes.