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The coexistence curves of {x(CHCOOC2H5)2+ (1−x)CH3(CH2)4CH3} in the critical region

✍ Scribed by Xueqin An; Chunfeng Mao; Guang hui Sun; Weiguo Shen

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
137 KB
Volume
30
Category
Article
ISSN
0021-9614

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✦ Synopsis

Coexistence curves for x CHCOOC H q 1 y x CH CH CH have been determined 2 5 2 3 2 4 3 by measurement of refractive index. The critical amplitude B and the critical exponent ␤ Ž . Ž . Ž . Ž have been deduced from T, n , T, x , and T, where n, x, and are the refractive . index, the mole fraction, and the volume fraction, respectively curves and the value of ␤ is found to be consistent with theoretical predictions. The experimental results have also been used for the assessment of the Wegner correction terms and the behaviour of the diameter of the coexistence curve in various units over a temperature range of 8 K from the critical temperature. The coexistence curves have been successfully described by combining the Wegner equation and the expression for the diameter.

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