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Excess volumes of (1-pentanol  +  cyclohexane or benzene) at temperatures between 283.15 K and 328.15 K

✍ Scribed by Ohji Hiroyuki

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 207 KB
Volume: 34
Category: Article
ISSN: 0021-9614
DOI: 10.1006/jcht.2001.0940

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✦ Synopsis

The densities of (1-pentanol + cyclohexane or benzene) have been measured at 15 K intervals from T = 283.15 K to T = 328.15 K for comparison with the results of (2-ethoxyethanol + cyclohexane or benzene). The excess volumes V E , excess thermal expansivities α E , and the pressure derivatives of the excess enthalpies (∂ H E /∂ P) T , were estimated from the measured densities. The values of V E and their temperature dependence for the 1-pentanol systems were found to be positive over the entire concentration range. The behaviour of α E for (1-pentanol + cyclohexane) is quite different from that of (2-ethoxyethanol + cyclohexane), while the α E value for (1-pentanol + benzene) is very similar to that of (2-ethoxyethanol + benzene). The behaviour of these thermodynamic properties are discussed in terms of inter-and intra-molecular hydrogen bonds and π electrons.

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Excess volumes of (1-pentanol &#xa0;+&#xa0; cyclohexane or benzene) at temperatures between 283.15 K and 328.15 K

✦ Synopsis

Excess volumes of (1-pentanol + cyclohexane or benzene) at temperatures between 283.15 K and 328.15 K