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Chemistry · Oct / Nov 2024 · Paper 11 · Question 11

5070Electrolysis

Aqueous copper(II) sulfate is electrolysed using copper electrodes. Which row describes the changes that take place during the electrolysis?

  1. Amass of anode: increases; mass of cathode: decreases; colour of solution: becomes paler
  2. Bmass of anode: increases; mass of cathode: decreases; colour of solution: stays the same
  3. Cmass of anode: decreases; mass of cathode: increases; colour of solution: becomes paler
  4. Dmass of anode: decreases; mass of cathode: increases; colour of solution: stays the same

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Correct answer: D. mass of anode: decreases; mass of cathode: increases; colour of solution: stays the same

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