Critical Behavior of Binary Mixtures of Nitrobenzene + n-Undecane and Nitrobenzene + n-Dodecane

Turbidities and isobaric heat capacities per unit volume, in a wide temperature range, have been measured for critical binary solutions of {nitrobenzene +  n -undecane} and {nitrobenzene +  n -dodecane}. The critical exponents and the system-dependent critical amplitudes were deduced. The non-critic...

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Bibliographic Details
Published in:Journal of solution chemistry 2012-11, Vol.41 (10), p.1866-1888
Main Authors: Yin, Tian-Xiang, Lei, Yun-Tao, Huang, Mei-Jun, Chen, Zhi-Yun, An, Xue-Qin, Shen, Wei-Guo
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Exact sciences and technology
General and physical chemistry
Geochemistry
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Oceanography
Physical Chemistry
Solutions
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Summary:Turbidities and isobaric heat capacities per unit volume, in a wide temperature range, have been measured for critical binary solutions of {nitrobenzene +  n -undecane} and {nitrobenzene +  n -dodecane}. The critical exponents and the system-dependent critical amplitudes were deduced. The non-critical and the critical-fluctuation induced contributions to the background heat capacities were determined. We also obtained the coupling constant by analyzing the coexistence curve data with crossover theory. These parameters were used to test some universal amplitude ratios and together with the coexistence-curve data to test the complete scaling theory. It is shown that the contribution from heat capacity plays an important role in describing the asymmetric criticality of the coexistence curve.
ISSN:0095-9782
1572-8927
DOI:10.1007/s10953-012-9907-3