what is electrochemistry?Introduction.
Electrochemistry is the study of chemical processes that cause electrons to move. This movement of electrons is called electricity, which can be generated by movements of electrons from one element to another in a reaction known as an oxidation-reduction ("redox") reaction.
A redox reaction is a reaction that involves a change in oxidation state of one or more elements. When a substance loses an electron, its oxidation state increases; thus, it is oxidized. When a substance gains an electron, its oxidation state decreases, thus being reduced. For example, for the redox reaction
H2+F2→2HF
Oxidation reaction:H2→2H2e−
Reduction reaction:F2+2e−→2F−
Overall Reaction:H2+F2→2H2F−
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