The ability of an ion to preferentially dissolve ( as a result of unequal activities ) is classified as the Potential Determining Ion.
2.
In contrast, Potential Determining Ions, whose concentrations affect surface potential ( by surface chemical reactions ) as well the Debye length.
3.
For clay minerals the potential determining ions are H + and OH " and complex ions formed by bonding with H + and OH ".
4.
The ability of an ion to preferentially dissolve ( as a result of unequal activities ) over its counterion is classified as the "'Potential Determining Ion " '.