Electrochemistry: Chemical Change and Electrical Work
21.1 Half-reactions and electrochemical cells
21.2 Voltaic cells: Using spontaneous reactions to generate electrical energy
21.3 Cell potential: Output of a voltaic cell
21.4 Free energy and electrical work
21.5 Electrochemical processes in batteries
21.6 Corrosion: A case of environmental electrochemistry
21.7 Electrolytic cells: Using electrical energy to drive a non-spontaneous reaction
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