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Direct linkRyan M. Steinert; Micah E. Heikes; Jeremy T. Mitchell-Koch; Gary A. Baker; Katie R. Mitchell-Koch – Journal of Chemical Education, 2022
Three direct complexometric titration methods for bismuth subsalicylate determination in over-the-counter stomach relief caplets and liquids are presented, as well as a UV-vis assay, for use in student laboratories. The main difference between titration methods is the choice of indicator; either xylenol orange (XO), pyrocatechol violet (PV), or…
Descriptors: Science Instruction, Science Laboratories, Science Experiments, Laboratory Experiments
Wu, Nancy; Kubo, Tomohiro; Sekoni, Kikelomo N.; Hall, Ariana O.; Phadke, Sameer; Zurcher, Danielle M.; Wallace, Rachel L.; Kothari, Devki B.; McNeil, Anne J. – Journal of Chemical Education, 2019
A 3-week module incorporating the principles of green chemistry was developed for a large-enrollment, introductory organic chemistry laboratory course. An emphasis was placed on students planning their own experiments with the goal of obtaining a greener reaction (week 1). Students executed their designed experiments in week 2 and were given an…
Descriptors: Science Experiments, Introductory Courses, Organic Chemistry, Class Size
