In the standard galvanic cell Zn(s) | Zn2+(aq) || Cu2+(aq) | Cu(s), where do oxidation and reduction take place?
Answer and explanation
Correct answer: D. Oxidation occurs at the zinc anode; reduction occurs at the copper cathode
Oxidation always occurs at the anode (An Ox: Zn -> Zn2+ + 2e-). Reduction always occurs at the cathode (Red Cat: Cu2+ + 2e- -> Cu). In a galvanic cell, electrons flow from anode to cathode.
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