Document Title

The Analysis of Seawater: A Laboratory-Centered Learning Project in General Chemistry

Department/School

Chemistry

Abstract

A laboratory-centered learning project for general chemistry on the analysis of seawater is described. Each laboratory section of 16–20 students is divided into teams of four students; each student works for three weeks on the project. Aggregation of all the class data gives the proximate total analysis (>99%) of the major ionic constituents of seawater. The experimental design includes both qualitative analysis for cations and anions and the quantitative analysis of four cations (Na+, K+, Mg2+, Ca2+) and three anions (Cl-, SO42-, Br-) by a variety of gravimetric, volumetric, and instrumental methods. During the three-week project each group writes two draft reports and a final report that summarizes the group's and class's experimental work. Each group member receives a grade based on the overall quality of the report as well as their contributions to the project.

Document Type

Article

Publication Title

Journal of Chemical Education

Publication Date

2003

Volume

80

Issue

1

Pages

54

Digital Object Identifier (DOI)

10.1021/ed080p54

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