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Ultrasonic speeds and isentropic functions of [2-{2-(2-alkoxyethoxy)ethoxy}ethanol + di-n-butylether] at the temperature 298.15 K

✍ Scribed by Amalendu Pal; Sanjay Sharma

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 184 KB
Volume: 30
Category: Article
ISSN: 0021-9614
DOI: 10.1006/jcht.1998.0343

No coin nor oath required. For personal study only.

✦ Synopsis

w Ä Ž . 4 Ultrasonic speeds u have been measured in 2-2-2-methoxyethoxy ethoxy ethanol q dix w Ä Ž . 4

x w Ä Ž n-butylether , 2-2-2-ethoxyethoxy ethoxy ethanol q di-n-butylether , and 2-2-2-. 4

x butoxyethoxy ethoxy ethanol q di-n-butylether systems across the entire composition ranges, at the temperature 298.15 K, using a sing-around technique, at a frequency of 4 MHz. The values have been combined with those of the excess molar volumes to obtain estimates of the product K of the molar volume and the isentropic compressibility , and the excess

S, m S

values K E were also calculated. The deviation u D of the ultrasonic speeds from their

values in an ideal mixture were also evaluated for all measured values of x. These values are compared with the mixing function ␦ u calculated in the paper. The behaviour of u, u D , and K E with composition and the number of carbon atoms in the aliphatic chain of the S, m alkoxyethanol is discussed.

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