Oxidation-reduction (redox) reaction is one type of chemical reaction that involves the transfer of electrons, with oxidation and reduction referring to the loss and gain of electrons, respectively. Voltaic pile was the first practical electrochemical system (or battery) that could continuously provide electrical current. A Voltaic pile consists two electrodes, copper (or silver) and zinc discs, with a layer of salt water soaked paper stacked in between. When the two electrodes are connected with a wire, electricity is obtained. There are different physical processes occurring inside the Voltaic pile system: The driving force for the reactions are determined by the…
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