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JAMB Chemistry 1981 Question 18

Question 18

Electrolysis

Which of the following processes takes place during electrolysis?

  1. A.Positive ions are discharged at the anode by gaining sufficient electrons to become neutral
  2. B.Negative ions are discharged at the anode by gaining sufficient electrons to become neutral
  3. C.Positive ions are discharged at the anode by losing sufficient electrons to become neutral
  4. D.Negative ions are discharged at the anode by losing sufficient electrons to become neutral
  5. E.Nothing happens.
Show the answer and explanation

Answer: D (Negative ions are discharged at the anode by losing sufficient electrons to become neutral)

Explanation

Anions move to the anode and give up their extra electrons there, becoming neutral atoms or molecules.