Journal of Pure and Applied Ultrasonics

Ranjan Dey ¹, Jyotsna Chhabra ¹, S. K. Shukla ², J. D. Pandey ¹

Affiliations
1 Department of Chemistry, University of Allahabad, Allahabad-211 002, IN
2 Department of Physics, Brahmanand College, Kanpur, IN

Abstract

A comparative study of ultrasonic velocity evaluated from Schaaffs collision factor theory (CFT), Nomoto relation, ideal mixing relation and Junjie relation has been carried out for the Pb-Sn alloy at three different temperatures and at various compositions. The agreement between experimental and theoretical values is quite satisfactory. The computed values of sound velocities from ideal-mixing relation have been used to obtain the degree of molecular interaction. Interaction studies have also been made in terms of excess intermolecular free-length and excess acoustic impedance.

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J. D. Pandey ¹, V. Sanguri ¹, Jyotsna Chhabra ¹, Karunesh K. Tiwari ¹, Tanuja Nautiyal ¹

Affiliations
1 Department of Chemistry, University of Allahabad, Allahabad-211002, IN

Abstract

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.

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