Thermodynamics of two-phase-systems

✍ Scribed by P. Van Der Leeden

• Publisher: Elsevier Science
• Year: 1955
• Weight: 394 KB
• Volume: 21
• Category: Article
• ISSN: 0031-8914
• DOI: 10.1016/s0031-8914(55)90059-8

✦ Synopsis

The thermodynamics of higher-order transitions has caused "considerable discussion without notable agreement" x). As controversies still exist it is worth while to give a more systematic outline then has been given up to now, especially as the experimental evidence is growing rapidly. This paper will be restricted to the study of systems in equilibrium, consisting of one component ~nd two phases and one type of work only. The actual occurrence of the systems studied will play a minor role only. Taylor-series of the Gibbs' functions will be apphed systematically to study the contact relations between the thermodynamic potentials. It will be shown that mathematically second order lines are a much more '~exceptiona/" state of affairs than. isolated second or higher order points on first order lines. The notion of double-point will be introduced and an apphcation mentioned. As a by-pro.duct several relations involving higher-order-derivatives of transition-lines are found.