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ERIC Number: EJ863180
Record Type: Journal
Publication Date: 2009-Nov
Pages: 4
Abstractor: As Provided
Reference Count: 5
ISSN: ISSN-0021-9584
The Remarkable Chemistry of Potassium Dioxide(1-): Two Microscale Classroom Demonstrations
Allen, Andrew; Anderson, Michael; Mattson, Bruce
Journal of Chemical Education, v86 n11 p1286-1289 Nov 2009
Potassium dioxide, KO[subscript 2], (potassium superoxide) is an important compound owing to its ability to react with carbon dioxide to produce oxygen. This unique ability is employed to design rebreathing devices for submarines, space vehicles, and space suits. "Rebreathers" for firefighters and miners have also been designed using potassium superoxide. We provide instructions for performing two classroom demonstrations: (a) The demonstration of potassium superoxide's ability to react nearly quantitatively with carbon dioxide, and (b) the paramagnetism of potassium superoxide. Five confirmatory experiments are described in support of the first demonstration. (Contains 2 figures and 12 notes.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A