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ERIC Number: EJ920332
Record Type: Journal
Publication Date: 2010-Oct
Pages: 6
Abstractor: As Provided
Reference Count: 11
ISSN: ISSN-0021-9584
Improvements upon the "Colorful Cobalt Catalysis" Demonstration and Evidence for the Presence of an Autocatalytic Mechanism
Wright, Stephen W.
Journal of Chemical Education, v87 n10 p1064-1069 Oct 2010
The oxidation of potassium sodium tartrate by hydrogen peroxide catalyzed by cobalt(II) chloride is a favorite lecture demonstration. I present conditions under which this experiment may be performed without need for 30% hydrogen peroxide and without need for controlled heating or any heating of the reaction mixture. I further show that this reaction is subject to an induction period and that the induction period may be shortened or eliminated by the introduction of one of the reaction products, bicarbonate ion, into the reaction mixture. (Contains 9 notes, 1 figure, and 1 scheme.)
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: High Schools; Higher Education; Postsecondary Education; Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A