Abstract
A simple experiment is described that exposes students to two important aspects of electrochemistry: its potential use in industrial technologies and its application for solving analytical problems. To illustrate these two points we have chosen to examine the electrolytic elimination of metal ions (Cd2+, Cu2+, Zn2+) from an aqueous solution. The metal ion concentrations are monitored by differential pulse polarography. This experiment is well suited to explain the connection between thermodynamics and kinetics based on the quantitative evolution of the different metal concentrations.
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