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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

    Astronuc

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    Staff: Mentor

    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

    alxm

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    Science Advisor

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

    Also, ethanal forms a more stable enolate.
     
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