Physical Chemistr Nonideal Systems Reaction equilibrium in electrolyte solutions For the ionization of the weak acid hX in aqueous solution Hx+H2O分HO++X K r(HO)m(HO)/mlr(x)m(X )/m (11.14 y(HX)m(H/m° In dilute solution m(hO)m(X dilute solution 11.15) m(Hr) The pair of ions HO/X-8 Reaction Equilibrium in electrolyte solutions For the ionization of the weak acid HX in aqueous solution + − HX + H2 O  H3 O + X (11.13) o o o o a HX m HX m H O m H O m X m X m K ( ) ( )/ [ ( ) ( )/ ][ ( ) ( )/ ] 3 3    + + − − = (11.14) In dilute solution dilute solution (11.15) ( ) ( ) ( ) 3 2 m HX m H O m X Ka + −  =  The pair of ions H3O+/X￾Physical Chemistry Nonideal Systems