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JAMB Chemistry 2007 Question 16

Question 16

Electrolysis

The reaction that takes place in a Daniell cell is

  1. A.direct combination
  2. B.redox
  3. C.double decomposition
  4. D.neutralization.
Show the answer and explanation

Answer: B (redox)

Explanation

In a Daniell cell zinc is oxidised (Zn → Zn2+ + 2e−) while Cu2+ is reduced to copper, so the cell reaction is a redox reaction.