A new approach to collision factor theory applied to binary and ternary liquid mixtures at different temperatures

摘要

Ultrasound velocities have been measured in pure hexadecane,heptadecane,1-butanol,1-pentanol,1-hexanol,1-heptanol and in the binary mixtures of hexadecane/heptadecane with 1-alkanols at 298.15,308.15 and 318.15 K.Similarly ultrasonic velocity has also been measured for the ternary systems of hexadecane+1-butanol and hexadecane+1-heptanol with dimethyl sulphoxide(DMSO),dimethylformamide(DMF)and tetrahydrofuran(THF)each as a third component at three temperatures.The experimental values of ultrasonic velocities have been compared with those predicted on the basis of collision factor theory and the demerits of this theory have been overcome by applying a new approach incorporating collision volume instead of molar volume and the number of molecules involved in collisions.This modification has also been applied on the systems studied by other workers and the relative merits have been discussed.Further,the effect of temperature provides an opportunity to study the nature and extent of interactions between component molecules as interactions are a result of active collisions between molecules.