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Excess volumes and densities of binary mixtures of γ-butyrolactone + 1, 3, 5-trimethylbenzene or 1, 2, 4-trimethylbenzene at several temperatures

✍ Scribed by Sheng-kai Yang

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
216 KB
Volume
140
Category
Article
ISSN
0167-7322

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✦ Synopsis

Densities of two binary mixtures formed by γ-butyrolactone with 1,3,5-trimethylbenzene and 1,2,4-trimethylbenzene have been determined over the full range of compositions over the temperature range (288.15 K to 308.15 K) and the local barometric pressure using a vibrating-tube densimeter. From these experiments, excess molar volumes (V E m ) have been calculated. It is found to be positive with a maximum at about the mole fraction of 0.5. Excess volumes were also fitted to a Redlich-Kister type equation. Our result shows V E m increases when temperature increases in the studied systems.

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