例：写出CuS04,K2SO4与A2S04)3离子平均浓度与 电解质浓度的关系 CuSO mce =m,mso=m,V.=v =1,v=V,+v=2 m:=(m·m）=m NaSO,:myo =2m,msor=m,v,=2,v.=1,v=V+v=3 m=(mmt）=[(2m'm]=4.m 4,(S04)3:mo=2m,mo2=3m,V,=2,.=3,v=+业.=5 %=(mm）=[(2m-(3m)]=108.m例：写出CuSO4，K2SO4与Al2 (SO4 )3离子平均浓度与 电解质浓度的关系 ( ) 2 2 4 4 + + 1 / : , , 1, 2 Cu SO CuSO m m m m m m m m    + −      + − + − −  − = = = = = + = =  = ( ) ( ) 2 4 2 4 + + 1 / 1/3 2 1/3 : 2 , , 2, 1, 3 2 4 Na SO Na SO m m m m m m m m m m    + −      + − + − −  − = = = = = + = =  =  =      ( ) ( ) ( ) ( ) 2 4 2 4 + + 3 1 / 1/5 2 3 1/5 : 2 , 3 , 2, 3, 5 2 3 108 Na SO Al SO m m m m m m m m m m    + −      + − + − −  − = = = = = + = =  =  =     