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The coexistence curves of {x(CHCOOC2H5)2+(1−x)CH3(CH2)6CH3} in the critical region

✍ Scribed by Xueqin An; Xinghua Liu; Weiguo Shen

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
189 KB
Volume
29
Category
Article
ISSN
0021-9614

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✦ Synopsis

Coexistence curves for 4x(CHCOOC2H5)2 + (1 -x)CH3(CH2)6CH35 have been determined by measurements of the refractive index. The critical amplitude B and the critical exponent b have been deduced from (T, n), (T, x), and (T, f) (where n, x, and f are refractive index, mole fraction, and volume fraction, respectively) curves and the last is consistent with the theoretical values. The experimental results have also been analysed to examine the Wegner correction terms and the behaviour of the diameter of the coexistence curve in various units over a temperature range of 10 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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