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Why do F- and OH- have negative S values?

  1. Mar 23, 2006 #1
    Why do F- and OH- have negative S values? (Entropy)

    And are they the only ones with negative S values?
     
  2. jcsd
  3. Mar 23, 2006 #2

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    The question isn't too meaningful without a context: aqueous? gas phase? Homework?
     
  4. Mar 23, 2006 #3
    aqueous; its not homework, I'm just curious. In my book, all the S values are positive except those two, I'm just wondering why.
     
  5. Mar 24, 2006 #4

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    Snoop around in the discussion of thermodynamic properties of ions a little more --- you'll find that they are relative to arbitrarily assigned zero values for H+ formation.
     
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