calculation from literature values with standard SSA and SSD at ionic strength of 1M, log K for Aerosil in brackets for Cabosil content »Si-O<1-> + Li<1+> = »Si-O-Li logK = 1.3(0.8) »Si-OH = »Si-O<1-> + H<1+> pK2 = -logK = 7.0 sum »Si-OH + Li<1+> = »Si-O-Li + H<1+> logK= 1.3(0.8) -7 = -5.7(-6.2)