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Thermodynamic properties of (an alkylbenzene + cyclohexane) at the temperature 298.15 K

โœ Scribed by Shinya Fujii; Katsutoshi Tamura; Sachio Murakami

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
395 KB
Volume
27
Category
Article
ISSN
0021-9614

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โœฆ Synopsis

Excess enthalpies, excess heat capacities, densities, and speeds of sound of (ethylbenzene or propylbenzene or 1-methylethylbenzene+cyclohexane) were measured at the temperature 298.15 K. From these measurement, excess volumes, excess isentropic and isothermal compressibilities, and excess isochoric heat capacities were estimated. The excess values are compared with those for (toluene or benzene+cyclohexane). The excess enthalpies and excess volumes are positive and the excess isobaric and isochoric heat capacities are negative for all mixtures. The excess isothermal and isentropic compressibilities are positive along with positive excess volumes. Effects of excess thermal expansivities on isothermal compressibility and isochoric heat capacity are discussed. For these mixtures, the excess thermal expansivity seems to be sufficiently small to be neglected.

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