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In Wednesday's lecture, Lavelle went over the concept of electron transfer between two beakers where he described the concept of reduction and oxidation and elaborating on cathode and anode. May someone clarify that concept for me. Thanks.
If a species is reduced, this means it is gaining electrons. If a species is oxidized, the opposite is true and it loses electrons. A cathode is where reduction occurs and an anode is where oxidation occurs. In a galvanic cell, this transfer of electrons is responsible for creating electrical energy.
For a Galvanic cell, reduction occurs at the cathode, meaning the substance is gaining electrons. At an anode, oxidation is occurring, and the substance is losing electrons. These two reactions, oxidation and reduction, are paired through the Galvanic cell, meaning that the electrons lost from the anode are being gained by the cathode. This flow of electrons creates an electric current (measured in volts) that can potentially do electric work.
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