ERIC Number: EJ913060
Record Type: Journal
Publication Date: 2010-Jan
Pages: 3
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: N/A
Wash Bottle Laboratory Exercises: Iodide-Catalyzed H[subscript 2]O[subscript 2] Decomposition Reaction Kinetics Using the Initial Rate Approach
Barlag, Rebecca; Nyasulu, Frazier
Journal of Chemical Education, v87 n1 p78-80 Jan 2010
A wash bottle water displacement scheme is used to determine the kinetics of the iodide-catalyzed H[subscript 2]O[subscript 2] decomposition reaction. The reagents (total volume 5.00 mL) are added to a test tube that is placed in a wash bottle containing water. The mass of the water displaced in [approximately]60 s is measured. The reaction is first order in H[subscript 2]O[subscript 2] and first order in I[superscript -]. The average rate constant reported by students is 0.0112 [plus or minus] 0.0002 M[superscript -1] s[superscript -1] (N = 17) at [approximately]20 [degree]C. (Contains 5 tables and 3 figures.)
Descriptors: Science Activities, Kinetics, Science Laboratories, Scientific Concepts, Chemistry, Scientific Principles, Science Instruction, College Science
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
Publication Type: Journal Articles; Reports - Evaluative
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A