Electrolysis as a model – basic principles and applications
How it works
Electrolysis is a chemical process in which electrical energy is used to force a chemical reaction that does not proceed spontaneously. In the process, ions in a solution or melt are drawn to the electrodes by applying a direct voltage, where they take up or give off electrons (reduction or oxidation). Electrolysis is used for the extraction and purification of metals, for the production of gases such as hydrogen and oxygen, and for electroplating. The terms anode (positive pole, oxidation) and cathode (negative pole, reduction) are central.
During electrolysis, cations migrate to the cathode (reduction) and anions to the anode (oxidation); electrical energy enables the reversal of spontaneous redox processes.
An example
Which particles migrate to the cathode during the electrolysis of a copper sulfate solution?
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50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Chemistry. The topic assignment may vary by federal state.