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Boiling Points

  1. Apr 11, 2009 #1
    Why is there a difference in boiling points between methanal (CH2O) which is -21degrees Celsius and ethanal (CH3CHO) which is +21degrees Celsius?
  2. jcsd
  3. Apr 11, 2009 #2


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    I would expect the difference molecular mass has something to do with it.
  4. Apr 11, 2009 #3
    I was researching it, and came up with mass, hydrogen bond with oxygen, and electrostatic attraction between molecules. What do you think would be the #1 reason?
  5. Apr 12, 2009 #4


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    Hydrogen bonding. It's by far the strongest of the mentioned effects.

    Also, ethanal forms a more stable enolate.
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