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ERIC Number: EJ823748
Record Type: Journal
Publication Date: 2008-Oct
Pages: 3
Abstractor: As Provided
Reference Count: 12
ISBN: N/A
ISSN: ISSN-0021-9584
A Dramatic Classroom Demonstration of Limiting Reagent Using the Vinegar and Sodium Hydrogen Carbonate Reaction
Artdej, Romklao; Thongpanchang, Tienthong
Journal of Chemical Education, v85 n10 p1382-1384 Oct 2008
This demonstration is designed to illustrate the concept of limiting reagent in a spectacular way. Via a series of experiments where the amount of vinegar is fixed and the amount of NaHCO[subscript 3] is gradually increased, the volume of CO[subscript 2] generated from the reaction varies corresponding to the amount of NaHCO[subscript 3] until it reaches the point where the CO[subscript 2] volume remains constant no matter how much NaHCO[subscript 3] is used. The observation clearly leads to the conclusion that before the equivalence point, NaHCO[subscript 3] is the limiting reagent and vinegar becomes the limiting reagent afterwards. This demonstration is appropriate for introductory high school chemistry level and recommended for a large classroom presentation. (Contains 3 figures and 4 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: jchemed@egpp.com; Web site: http://www.jce.divched.org
Publication Type: Journal Articles; Reports - Descriptive
Education Level: High Schools
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A