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JAMB Chemistry 1984 Question 15

Question 15

Redox Reactions

For the reaction 2Fe3+ + 2I− → 2Fe2+ + I2, which of the following statements is TRUE?

  1. A.Fe is oxidized to Fe3+
  2. B.Fe3+ is oxidized to Fe2+
  3. C.I− is oxidized to I2
  4. D.I− is reduced to I2
  5. E.I− is displacing an electron from Fe3+.
Show the answer and explanation

Answer: C (I− is oxidized to I2)

Explanation

Each I− loses an electron to become iodine, so iodide is oxidised. Fe3+ gains those electrons and is reduced to Fe2+.