In an electrolytic cell, at which electrode does reduction occur and what is the electrical polarity of that electrode?
Answer and explanation
Correct answer: D. Reduction occurs at the cathode, which is positive
- Step 1: Reduction (gain of electrons) ALWAYS occurs at the cathode in both galvanic and electrolytic cells. Step 2. In an electrolytic cell, the external power supply pumps electrons onto the cathode, making it negative (-). Answer: Reduction occurs at the cathode, which is negative. Why not the others: In a galvanic cell, reduction also occurs at cathode, but it is positive (+).
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