Answer:
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) reaction². An electrochemical reaction is a process that involves the transfer of electrons between a solid and a liquid, either caused or accompanied by an electric current¹. The electric current can be generated by a chemical reaction that liberates electrical energy, such as in a battery or a fuel cell¹. Alternatively, the electric current can be used to bring about a chemical reaction that does not occur spontaneously, such as in electrolysis¹.
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(2) Electrochemical reaction | Definition, Process, Types, Examples
(3) Electrochemical Reaction - an overview | ScienceDirect Topics.
(4) Electrochemical reaction mechanism - Wikipedia.