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The measurement of coexistence curves for {x(CHCOOC2H5)2+(1−x)CH3(CH2)8CH3} in the critical region

✍ Scribed by Xueqin An; Xianlin Cui; Tao Wang; Weigou Shen

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

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✦ Synopsis

Coexistence curves for binary liquid mixtures of x CHCOOC H q 1 y 2 5 2 . Ž . 4 x CH CH CH have been determined by measurement of the refractive index. The 3 2 8 3

experimental results have been used in the determination of the critical exponent ␤ and critical amplitude B, and the study of the diameters of the coexistence curves. The values of the critical exponent ␤ are found to be consistent with theoretical predictions. The experimental results have also been used in the assessment of the Wegner correction terms over a temperature range of about 11 K from the critical temperature. The coexistence curves have been successfully described by a combination of the Wegner equation and the expression for the diameter.

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