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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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J. D. Pandey ¹, V. Sanguri ¹, R. K. Mishra ¹, A. K. Singh ¹

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

Abstract

Acoustic methods have been applied to estimate the effective Debye temperature (θ_D) of liquid mixtures (binary and ternary). The theoretical approach, employed earlier, has been completely modified, and a new approach has been suggested. Six binary and six ternary liquid mixtures have been undertaken for computing the values of effective Debye temperature using the present approach. Theoretical values have been compared with the standard findings, and quite good agreement has been achieved. The necessary experimental data needed have been taken from literature.

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