Chemistry 30 Diploma Practice Exam

Which electrode is the site of oxidation in an electrochemical cell?

Anode Cathode Electrodes Endpoint

Correct Answer:

Anode

Explanation:

Oxidation is the loss of electrons, so the electrode where electrons are released into the external circuit is the site of oxidation—the anode. At the anode, the species undergoes oxidation, producing electrons that travel to the other electrode, where reduction occurs at the cathode. “Electrodes” is too general a term, and “endpoint” isn’t used to describe where oxidation takes place. So the oxidation site is the anode.

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