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Molar Excess Volumes and Excess Isentropic Compressibilities of Ternary Mixtures Containing o-Toluidine

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Abstract

Molar excess volumes, V E ijk , and speeds of sound, U ijk , of o-toluidine (i) + benzene (j) + cyclohexane or n-hexane or n-heptane (k) ternary mixtures have been measured as a function of composition at 308.15 K. The observed speed of sound data have been utilized to determine the excess isentropic compressibilities, (K E S ) ijk , of the ternary (i+j+k) mixtures. The Moelywn-Huggins concept (Huggins in Polymer 12: 389–399, 1971) of connectivity between the surfaces of the binary mixture constituents has been extended to ternary mixtures (using the concept of a connectivity parameter of third degree of molecules, 3 ξ, which in turn depends on its topology) to obtain an expression that describes well the measured V E ijk and (K E S ) ijk data. The observed data have also been analyzed in terms of Flory’s theory.

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Authors and Affiliations

  1. Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India

    D. Sharma, J. S. Yadav, K. C. Singh & V. K. Sharma

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  1. D. Sharma
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  2. J. S. Yadav
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  3. K. C. Singh
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  4. V. K. Sharma
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Correspondence to V. K. Sharma.

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Sharma, D., Yadav, J.S., Singh, K.C. et al. Molar Excess Volumes and Excess Isentropic Compressibilities of Ternary Mixtures Containing o-Toluidine. J Solution Chem 37, 1099–1112 (2008). https://doi.org/10.1007/s10953-008-9294-y

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