Abstract
Using recently developed methods for surface manometry, the first-order two-dimensional phase transition from vapour to liquid in monolayers of ultra-pure n-pentadecanoic acid at the interface between air and aqueous 10-2 mol dm-3 HCl has been studied at temperatures from the triple point (17 °C) to 40 °C. Contrary to previous reports, the critical temperature is well above 40 °C. It was not possible with the apparatus and methods developed to date to determine the critical temperature, which is probably in the range of 50-60 °C. The latent heat of the phase transition was obtained as a function of temperature.
Original language | English (US) |
---|---|
Pages (from-to) | 585-590 |
Number of pages | 6 |
Journal | Journal of the Chemical Society, Faraday Transactios 1: Physical Chemistry in Condensed Phases |
Volume | 83 |
Issue number | 3 |
DOIs | |
State | Published - Dec 1 1987 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Chemistry(all)