Zero point change upon association

Table I also lists, again for the three best ab initio studies, the equilibrium dissociation energy (De), zero point change upon association (AZPE), ground-state...

The shift in the point of zero charge in the case of the adsorption of an organic substance is usually associated with the change in the electric moment of the surface layer upon the substitution of the dipoles of the organic substance for the oriented water dipoles. This change may be due to other causes as well, e.g., to a change in the potential distribution in the electronic cloud at the metal surface [3]. 

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