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Antacids Revisited with Modern Chemical Instruments: GCMS, AAS, and CCT

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Stanley L. Burden and Christopher J. Petzold

Chemistry Department, Taylor University, Upland, IN 46989

J. Chem. Educ., 1999, 76 (11), p 1544

DOI: 10.1021/ed076p1544

Publication Date (Web): November 1, 1999

Section:

History, Education, and Documentation

Abstract

Data from multiple analytical methods are often required to identify or characterize samples. Typical undergraduate experiments utilize only one or two techniques in a given experiment. This paper describes a novel experiment that requires students to obtain and interpret data from several analytical techniques to identify the brand name of a commercial antacid. Students receive a ground sample of a commercial antacid. They are required to design a set of experiments utilizing computer controlled titrations (CCT), atomic absorption (AA), gas chromatography-mass spectroscopy (GCMS), and careful quantitative manual titrations using a visual indicator of their choice to determine the brand name of their sample from a list of six to eight choices.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Analytical Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Chromatography

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