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Definition of mass-law effect

  1. At equilibrium, the product of the activities (or concentrations) of the reacting species is constant. Thus for the equilibrium

    [alpha]A + [beta]B [reversible arrow] [gamma]C + [delta]D

    K = [C][gamma][D][delta]/[A][alpha][B][beta]

    GULDBERG and WAAGE (1879). See also common-ion effect, equilibrium.