Chemistry
Identify one statement that does not hold true for electrorefining of copper:
- Electrolyte is acidified CuSO4 solution
- Cathode is a thin strip of impure copper
- Anode dissolves in the electrolyte
- Anode gets thicker.
Electrolysis
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Answer
Anode gets thicker
Reason — During electro-refining, the impure copper anode dissolves, so it gradually becomes thinner, while pure copper is deposited on the cathode, making the cathode thicker.
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