Vapour pressures of (butanenitrile+hexan-1-ol or octan-1-ol) between the temperatures T=288.15 K and 323.15 K were measured by a static method. Excess enthalpies and volumes were also measured at T=298.15 K. Reduction of the vapour pressures to obtain activity coefficients and excess molar Gibbs fre
Vapour pressures at several temperaturesTand excess functions atT= 298.15 K of (butanenitrile + ethanol or butan-1-ol)
✍ Scribed by R. Garriga; I. Putze; P. Pérez; M. Gracia
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 474 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0021-9614
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✦ Synopsis
Vapour pressures of (butanenitrile + ethanol or butan-1-ol) between the temperatures T=278.15 K and 323.15 K were measured by a static method. Excess enthalpies and volumes were also measured at T=298.15 K. Reduction of the vapour pressures to obtain activity coefficients and excess molar Gibbs free energies was carried out by Barker's method. Azeotropic mixtures with a minimum boiling temperature were observed over the whole temperature range. The experimental results are interpreted in terms of the specific interaction between the hydroxyl hydrogen of the alcohol molecule and the lone electron pair on the nitrogen atom.
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Excess volumes of (1,2-dichloroethane or 1,2-dibromoethane + each of several isomers of butanol) have been determined from density measurements at the temperatures \(298.15 \mathrm{~K}\) and \(313.15 \mathrm{~K}\) using an Anton-Paar dersimeter. The results show that excess volumes are positive over