What happens at the anode during electrolysis?

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During electrolysis, the anode serves as the positive electrode where oxidation occurs.12

Specifically, negative ions present in the solution migrate to the anode and transfer one or more electrons to it, transforming into neutral elements or new molecules. If the electrode itself is the substance being transformed, it may dissolve as it gives up electrons to the circuit. This process of oxidation at the anode is also referred to as electrooxidation.1234