Physical Chemistr Nonideal Systems Reaction equilibrium in electrolyte solutions In aqueous solutions a(H,O)=r(HO)x(H,O) e for dilute aqueous solutions a(H2O)≈1,a1=ym1/m K=a(Ho a(oh) Lr(H3O)m(H3o)/mr(oh )m(OH)/m] Omission of the solvent's activi For the ho ionization V+=l=V, 2+=rr Kp=rim(Hgo )m(OH)/(m) dilute aqueous solution(11. 12yo7 Reaction Equilibrium in electrolyte solutions In aqueous solutions [ ( ) ( )/ ][ ( ) ( )/ ] ( ) ( ) 3 3 3 o o o w H O m H O m OH m OH m K a H O a OH + + − − + − = =   For the H2O ionization Omission of the solvent’s activity. ( ) ( ) ( ) a H2 O =  x H2 O x H2 O For dilute aqueous solutions o a(H2 O) 1,ai =  i mi / m (11.12)* 2 3 2 ( ) ( )/( ) o o Kw m H O m OH m + − =   dilute aqueous solution + = = −  = + −      2 1 , Physical Chemistry Nonideal Systems