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ERIC Number: EJ920071
Record Type: Journal
Publication Date: 2010-Sep
Pages: 5
Abstractor: As Provided
Reference Count: 10
ISSN: ISSN-0021-9584
One-Component Pressure-Temperature Phase Diagrams in the Presence of Air
Andrade-Gamboa, Julio; Martire, Daniel O.; Donati, Edgardo R.
Journal of Chemical Education, v87 n9 p932-936 Sep 2010
One-component phase diagrams are good approximations to predict pressure-temperature ("P-T") behavior of a substance in the presence of air, provided air pressure is not much higher than the vapor pressure. However, at any air pressure, and from the conceptual point of view, the use of a traditional "P-T" phase diagram is not strictly correct. In this article alternative phase diagrams suitable for systems of one component in the presence of air are proposed. These diagrams are vapor pressure-temperature projections for each total pressure in which a distinctive feature is the absence of a solid-liquid branch. (Contains 1 note and 4 figures.)
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A