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ERIC Number: EJ1088163
Record Type: Journal
Publication Date: 2016-Jan
Pages: 3
Abstractor: As Provided
ISSN: ISSN-0021-9584
Kinetics, Reaction Orders, Rate Laws, and Their Relation to Mechanisms: A Hands-On Introduction for High School Students Using Portable Spectrophotometry
Carraher, Jack M.; Curry, Sarah M.; Tessonnier, Jean-Philippe
Journal of Chemical Education, v93 n1 p172-174 Jan 2016
Teaching complex chemistry concepts such as kinetics using inquiry-based learning techniques can be challenging in a high school classroom setting. Access to expensive laboratory equipment such as spectrometers is typically limited and most reaction kinetics experiments have been designed for advanced placement (AP) or first-year undergraduate courses. Therefore, we developed a new and inexpensive laboratory experiment specially tailored for high school students. The activities include in situ monitoring of iodide oxidation using individual UV-visible spectrophotometers, data analysis with a spreadsheet, and interpretation. The experiment introduces chemical kinetics, offers practice problems, and teaches students the technique of flooding to acquire data and make connections with reaction mechanisms based on trends observed in the rate constants. The exercise was successful in solidifying the concepts of rates, rate laws, reaction order, and their relation to mechanistic studies. The provided handout and notes are tailored to help high school science teachers implement the Next Generation Science Standards in their classrooms.
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 - Descriptive
Education Level: High Schools; Secondary Education
Audience: Teachers
Language: English
Sponsor: National Science Foundation (NSF)
Authoring Institution: N/A
Grant or Contract Numbers: EEC0813570