Electrochemistry is the study of chemical changes produced by electric current and with the production of electricity by chemical reactions. All electrochemical reactions are redox reactions, which means that electrons are always transferred. Most electrochemical reactions occur in cells. Cells are contained places for reactions where electricity enters and exits through electrodes. There are two main types of cells. One type, the electrolytic cells, requires electricity to produce a non-spontaneous chemical reaction. The other type, the electrochemical cells, produces electricity through a spontane
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