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Ryan 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