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Homework Help: Why acetaldehyde has a higher boiling point than ethylamine?

  1. Aug 23, 2011 #1
    Ethylamine has 2 hydrogen bonds, Acethaldehyde has no one, so why the second has a higher boiling point?
  2. jcsd
  3. Aug 23, 2011 #2
    Is hydrogen bonding the only intermolecular force of consequence in this situation?

    How effectively can ethylamine hydrogen bond with itself? It has a lone pair on the nitrogen to serve as an H-bond acceptor, and has two amine hydrogens that can be donated.

    How large of a difference is there between the two boiling points?
  4. Aug 23, 2011 #3
    The boiling points are very close:
    Acetaldehyde 68ºF
    Ethylamine: 62ºF
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