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The liquid–liquid critical phenomena of {x(CHCOOC2H5)2+ (1−x)CH3(CH2)5CH3} in the critical region

✍ Scribed by Xueqin An; Jiong Yang; Weigou Shen

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

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✦ Synopsis

The coexistence curves for x CHCOOC H q 1 y x CH CH CH have been 2 5 2 3 2 5 3 determined within about 10 K from the critical temperature by measurements of the refractive Ž . index. The critical amplitude B, and the critical exponent ␤ have been deduced from T, n , Ž . Ž . T, x and T, curves where n, x, and are the refractive index, the mole fraction and the volume fraction, respectively. The values of ␤ are consistent with theoretical predictions. The experimental results have also been analysed in order to determine the Wegner correction terms, and the behaviour of the diameters of the coexistence curves in various units over the 10 K temperature range from the critical temperature. The coexistence curves have been successfully described by a combination of the Wegner equation and the expression for diameter.

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