ERIC Number: EJ1062153
Record Type: Journal
Publication Date: 2015-Mar
Pages: 4
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: N/A
NMR Kinetics of the S[subscript N]2 Reaction between BuBr and I[superscript -]: An Introductory Organic Chemistry Laboratory Exercise
Mobley, T. Andrew
Journal of Chemical Education, v92 n3 p534-537 Mar 2015
A simple organic chemistry experiment is described that investigates the kinetics of the reaction between 1-bromobutane (BuBr) and iodide (I[superscript -]) as followed by observing the disappearance of BuBr and the appearance of 1-iodobutane (BuI) using [superscript 1]H NMR spectroscopy. In small groups of three to four, students acquire data to examine the concentration-dependence of both the organic substrate and the nucleophile under pseudo- first-order and second-order conditions. After data processing, students analyze three data sets (one second-order experiment, and two first-order experiments with different concentrations of iodide) using an electronic spreadsheet. Students discuss the experimentally determined rate law, comparing it to that predicted for this S[subscript N]2 reaction.
Descriptors: Kinetics, Organic Chemistry, Laboratory Experiments, Science Activities, Spectroscopy, Data Processing, Spreadsheets, Electronic Publishing, Undergraduate Students, Teaching Methods, Science Education, Introductory Courses, Educational Practices
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 - Research
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A