Definition of Ostwald dilution law in US English:

Ostwald dilution law

(also Ostwald's dilution law)


  • A law stating that for dilute solutions of a binary electrolyte the square of the degree of dissociation of the solute, multiplied by its concentration, and divided by one minus the degree of dissociation, is a constant for the solute.


Late 19th century; earliest use found in Journal of Physical Chemistry.