Analysis of Zinc Tablets: An Extension to a Stoichiometry Experiment

Steven Murov and Brian Stedjee
Science, Mathematics, and Engineering Division, Modesto Junior College, Modesto, CA 95350
J. Chem. Educ., 2001, 78 (10), p 1389
DOI: 10.1021/ed078p1389
Publication Date (Web): October 1, 2001
History, Education, and Documentation

Abstract

Using a titration, students can determine the stoichiometry of the reaction between zinc ion and ferrocyanide ion. The technique can then be used to determine the concentration of zinc ion or ferrocyanide in unknown solutions or the amount of zinc ion in commercially available tablets. The experiment teaches many important general chemistry laboratory techniques, such as preparation of standard solutions and quantitative use of pipets and burets. The application of solution stoichiometry calculations provides an important link between lecture and the laboratory.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Analytical Chemistry

Keywords (Pedagogy):

Inquiry-Based / Discovery Learning

Keywords (Subject):

Quantitative Analysis
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  • Received: August 03, 2009

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