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Direct linkWithey, Jonathan M.; Bajic, Andrea – Journal of Chemical Education, 2015
A novel procedure is described where students use COMU [(1-cyano-2-ethoxy-2-oxoethylidenaminooxy)dimethylamino-morpholino-carbenium hexafluorophosphate], as a nonhazardous partner, in the one-pot coupling of a carboxylic acid and amine producing N,N-diethyl-3-methylbenzamide (DEET). Fundamental principles of carbonyl reactivity are understood,…
Descriptors: Organic Chemistry, Undergraduate Students, Introductory Courses, Laboratory Experiments
Epstein, Mark G.; Laszlo, Matthew W.; Mayer, Steven G. – Journal of Chemical Education, 2010
We present an adaptation to an experiment previously published in this "Journal". The experiment was designed to determine the heat capacity ratios of gases by measuring the speed of sound using a modified Kundt's tube. The experiment yielded excellent results for all of the gases and gas mixtures measured. Although elegant in its simplicity, it…
Descriptors: Lasers, Scientific Methodology, Science Experiments, Science Equipment
