ERIC Number: EJ1202215
Record Type: Journal
Publication Date: 2019-Jan
Abstractor: As Provided
Conducting a Low-Waste Iodine Clock Experiment on Filter Paper to Discern the Rate Law
Barrera, Luis A.; Alma C. Escobosa; Alsaihati, Laila S.; Noveron, Juan C.
Journal of Chemical Education, v96 n1 p165-168 Jan 2019
Herein we present a modified iodine clock experiment which replaces starch with cellulose paper. This provides the reaction with a white solid surface in which color change can be clearly observed and reduces reagent amounts required to 540 µL per group. After data acquisition, students are required to calculate reaction orders and the reaction constant k, culminating in their ability to discern the rate equation for this reaction. This experiment is ideal for teaching kinetics in high school and undergraduate settings, particularly if liquid waste disposal is not readily available or if high importance is placed upon minimizing their environmental impact.
Descriptors: Science Experiments, Chemistry, Kinetics, Science Laboratories, Science Process Skills, Problem Solving, Secondary School Science, College Science, Scientific Concepts
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: email@example.com; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Secondary Education; Higher Education; Postsecondary Education
Authoring Institution: N/A