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The Chemical Educator

ISSN: 1430-4171 (electronic version)

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Abstract Volume 5 Issue 5 (2000) pp 223-225

Measuring Relative Reactivities of Electrophilic Aromatic Bromination Using a Benchtop GC-MS

Brenda S. Kesler* and Sarah E. Williams

Department of Chemistry, San Josť State University, San Josť, CA 95192-0101

Published online: 12 August 2000

Abstract. This laboratory provides students with the opportunity to reinforce their knowledge of the numerous parameters involved in electrophilic aromatic substitution reactions. These concepts are investigated using a benchtop GC-MS. Students obtain hands-on experience with the coupling of gas-chromatographic analysis and mass-spectral analysis. Each student determines one data point by reacting a pair of compounds with bromine and iron (III) chloride. Individual results are then pooled into composite class data, affording students more available information for analysis than is typical in an organic chemistry laboratory.

Key Words:  Laboratories and Demonstrations; organic chemistry

(*) Corresponding author. (E-mail:

Article in PDF format (143 KB) HTML format

Supporting Materials:

Student Laboratory Handout (86 KB) 10.1007/s00897000411b

GCD Instructions for Users (109 KB) 10.1007/s00897000411c

Issue date: October 2, 2000

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