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JAMB Chemistry 1995 Question 50

Question 50

Alkanols

The relatively high boiling points of alkanols are due to

  1. A.ionic bonding
  2. B.aromatic character
  3. C.covalent bonding
  4. D.hydrogen bonding
Show the answer and explanation

Answer: D (hydrogen bonding)

Explanation

The –OH groups of neighbouring alkanol molecules form hydrogen bonds, which need extra energy to break, so alkanols boil higher than alkanes of similar mass.