Compressibility of Liquids. Rule of Noncrossing V−P Curvatures

Weight analysis of the liquid introduced into the stainless steel bomb under pressures up to 1 kbar in the temperature range of 20−50 °C at the interval of 10 °C was performed for 1,4-dioxane, acetonitrile, toluene, ethyl acetate, chlorobenzene, and n-hexane. The coefficients of the Tait equation we...

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Bibliographic Details
Published in:The journal of physical chemistry. B 2008-05, Vol.112 (21), p.6674-6682
Main Authors: Kiselev, Vladimir D, Bolotov, Alexander V, Satonin, Alexey, Shakirova, Ilzida, Kashaeva, Helena A, Konovalov, Alexander I
Format: Article
Language:English
Subjects:
B: Statistical Mechanics, Thermodynamics, Medium Effects
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Summary:Weight analysis of the liquid introduced into the stainless steel bomb under pressures up to 1 kbar in the temperature range of 20−50 °C at the interval of 10 °C was performed for 1,4-dioxane, acetonitrile, toluene, ethyl acetate, chlorobenzene, and n-hexane. The coefficients of the Tait equation were determined for all of the solvents at each temperature. There was a clear linear relation between the tangent bulk modulus (1/βT) at atmospheric pressure (1 bar) and the secant bulk modulus at 1 kbar; 1/βT = 0.9865 × (1000 V 0/ΔV 1kbar) − 4559 was found at a wide range of temperatures for different liquids, including glycerol and even mercury. This represents the rule of noncrossing P−V curvatures for the liquids. Using the correlation, it is possible to predict the coefficients (C, B) of the Tait equation from the experimental data of βT at 1 bar or, on the other hand, to calculate the value of βT from experimental compression at high pressures.
ISSN:1089-5647
1520-6106
1520-5207
DOI:10.1021/jp800513d