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Bond enthalpies

  1. Feb 27, 2005 #1
    Bond enthalpies....

    Apparently from what I have read, mean bond enthalpies are only given for things in gaseous state - why is this the case? Why can we not quote bond enthalpies in, say, the solid or liquid state?

    Thanks. :-D
  2. jcsd
  3. Feb 27, 2005 #2


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    It is difficult to experimentally determine the bond enthalpies in the solid or liquid state; usually because it takes less energy to melt/boil the substance than it takes to break all bonds between specific atoms.
    Last edited: Feb 27, 2005
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