## Chemistry: The Central Science (13th Edition)

$Kc = [H+][OH-]$ heterogeneous
The expression for Kc is given by the concentration of the products raised to their stoichiometric coefficients divided by the concentration of the reactants raised to their coefficients. $Kc = [H+][OH-]$ There is no denominator because the only reactant is H2O (l) and we cannot have the concentration of a pure liquid. Since there are both liquids and aqueous solutions it is heterogeneous.