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Boiling point

  1. Oct 26, 2009 #1
    1.Why does boiling point depend on weight ?
    2.Does the vanderwall force depend on weight ?
  2. jcsd
  3. Oct 26, 2009 #2


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    1. Because dispersion forces (a type of van der Waals force) depend on molecular size.

    2. Dispersion forces (also known as induced dipole-induced dipole interactions) depend on the polarizability of the molecule (how easy it is to get an asymmetric distribution of electron in a molecule). As the number of electrons in a molecule and the size of the molecule increases, the polarizability increases.
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