Diffusion of Gases into Air: A Simple Small-Scale Laboratory Activity

Autor/inn/en	Kallepalli, Samaya; Johnson, Lydia; Mattson, Bruce
Titel	Diffusion of Gases into Air: A Simple Small-Scale Laboratory Activity
Quelle	In: Journal of Chemical Education, 98 (2021) 10, S.3258-3262 (5 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Mattson, Bruce)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
DOI	10.1021/acs.jchemed.1c00657
Schlagwörter	Chemistry; Scientific Concepts; Scientific Principles; Kinetics; Molecular Structure; Science Activities; Science Laboratories; Inquiry; Active Learning; Independent Study; Undergraduate Students; Scientific Research; Student Research + Suchen Sie Ihr Suchwort? Chemie; Kinetik; Aktives Lernen; Selbststudium; Studentenforschung
Abstract	Thomas Graham discovered the law that bears his name while studying gas diffusion into air and other gases. He also found that the same relationship held with gas effusion, the movement of gases through a pinhole into a vacuum. Modern understanding of diffusion and effusion is based on kinetic-molecular theory, and it is generally accepted that Graham's law as originally stated holds for effusion. Diffusion is more complicated, involving intermolecular collisions and composition gradients. This article describes a simple laboratory activity in which diffusion of gases into air though an open syringe is studied over time. The activity could be adapted and modified into an inquiry-based independent study activity or undergraduate research project. (As Provided).
Anmerkungen	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: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01