Журнал термодинамики и катализа
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Estimation of Some Important Thermodynamic Properties of Organic Liquid Mixtures from Ultrasonic Velocity and Density Data

Rama Shankar Saroj, Pavan Kumar Gautam, A Mahan, Sunil and Shailendra Bada

Using the recently proposed equations for calculating thermal expansion coefficient (α) and isothermal compressibility (βT) from density (ρ) and ultrasonic velocity (u) values, six binary organic liquid mixtures have been considered. These are: n-heptane+toluene (I); n-heptane+n-hexane (II); toluene+n-hexane (III); cyclohexane+nheptane (IV); cyclohexane+n-hexane (V), and n-decane+n-hexane (VI) at 298.15 K. Literature data for ρ and u of these mixtures are employed to compute α, βT, as well as γ, Pint and Γ. Calculated values of βT are compared with the earlier ones, and the agreement is found to be good.