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A Didactic Experience of Statistical Analysis for the Determination of Glycine in a Nonaqueous Medium Using ANOVA and a Computer Program

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M. J. Santos-Delgado and L. Larrea-Tarruella

Department of Analytical Chemistry, Complutense University, 28040 Madrid, Spain

J. Chem. Educ., 2004, 81 (1), p 97

DOI: 10.1021/ed081p97

Publication Date (Web): January 1, 2004

Section:

History, Education, and Documentation

Abstract

This article describes the statistical comparison of two back-titration methods for the determination of glycine in a glacial HAc medium. The titration is carried out using perchloric acid. The glycine quantities obtained were determined by several groups of students on the same day (three groups a day, on average; a total of 32 groups during the academic year) and were compared by two-way ANOVA with the Statgraphics Plus 3.0 computer program. The laboratory exercise discussed in this article is recommended for fourth-year undergraduates.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Analytical Chemistry

Keywords (Pedagogy):

Computer-Based Learning

Keywords (Subject):

Laboratory Computing / Interfacing

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