Ultrasonic and Volumetric Studies of Binary Liquid Mixture Acetonitrile+Nitromethane at 298.15 K

Experimental measurements of density and ultrasonic velocity have been carried out for the binary liquid mixture acetonitrile+nitromethane over the entire composition range at 298.15 K. Experimentally determined values are then utilized for the computation of thermodynamic properties viz. isentropic compressibility and intermolecular free-length. Interactions between the components of binary mixture are studied in terms of excess molar volume, excess isentropic compressibility, excess intermolecular free-length and deviation in ultrasonic velocity. The effects of polarity of the component liquids are discussed. Moreover, an attempt has been made to examine the validity of several theories and relations, viz. collision factor theory, free-length theory, Nomoto relation, Junjie relation and Van Dael relation for the theoretical prediction of ultrasonic velocity in the system under consideration.