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JAMB Chemistry 1987 Question 44

Question 44

Alkanols

Ethanol reacts with aqueous sodium mono-oxoiodate (I) to give a bright yellow solid with a characteristic smell. The product is

  1. A.trichloromethane
  2. B.triiodomethane
  3. C.iodoethane
  4. D.ethanal.
Show the answer and explanation

Answer: B (triiodomethane)

Explanation

This is the iodoform test: ethanol is oxidised and iodinated to give yellow triiodomethane (CHI3), which has an antiseptic smell.