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ERIC Number: EJ941072
Record Type: Journal
Publication Date: 2011-Aug
Pages: 4
Abstractor: As Provided
Reference Count: 11
ISSN: ISSN-0021-9584
Measurement of the Compressibility Factor of Gases: A Physical Chemistry Laboratory Experiment
Varberg, Thomas D.; Bendelsmith, Andrew J.; Kuwata, Keith T.
Journal of Chemical Education, v88 n8 p1166-1169 Aug 2011
In this article, we describe an experiment for the undergraduate physical chemistry laboratory in which students measure the compressibility factor of two gases, helium and carbon dioxide, as a function of pressure at constant temperature. The experimental apparatus is relatively inexpensive to construct and is described and diagrammed in detail. Students analyze their data to determine values for the second virial coefficient for each gas, which may then be compared with the literature. The experiment demonstrates the nonideality of real gases. (Contains 2 tables and 2 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 - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A