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JAMB Chemistry 1997 Question 21

Question 21

Electrolysis

When platinum electrodes are used during the electrolysis of copper (II) tetraoxosulphate (VI) solution, the solution gets progressively

  1. A.acidic
  2. B.basic
  3. C.neutral
  4. D.amphoteric
Show the answer and explanation

Answer: A (acidic)

Explanation

Cu2+ is removed at the cathode and OH− is discharged at the anode as oxygen. H+ and SO42− are left behind, so the solution becomes tetraoxosulphate(VI) acid.