ULTRASONIC VELOCITY-MEASUREMENTS OF SUCROSE IN BINARY SOLVENT MIXTURES OF WATER PLUS ACETONITRILE AT 25, 35 AND 45-DEGREES-C

Ultrasonic velocities and densities of sucrose (C12H22O11) have been m easured in water and its binary mixtures with acetonitrile containing 10, 20, 30, 40 and 50 mole % of AN at 25, 35 and 45 degrees C. Various parameters such as acoustical impedance (Z), adiabatic compressibilit y (beta), apparent molal compressibility (phi(K)), relative associatio n (R A), intermolecular free length (L-f), molar sound velocity (R), s olvation number (S-n), Wada's constant (W) and surface tension (S-T) h ave been calculated. These parameters have been studied to throw light on solute - solvent interactions. The effect of temperature on these parameters has also been discussed.