RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Kaolinite
Reference: R82a
SCM Type: TL - Triple Layer
Ligand: Ca<2+> - calcium
Site Type: »Al-OH
Equation: »Al-OH + Ca<2+>  ⇔  »Al-O-Ca<1+> + H<1+>
LogK: -7.4        LogK°I=0 (Conversion to I = 0):   -7.40         LogK2.31 nm−2 (SSD-normalized):   -8.79
Experiment: Potentiometric Titration
Ionic Strength: 0.0 mol/L NaNO3
pH Range: 4-9
Ligand Concentration Range: 0.001-0.1 mol/L
Fit Method: graphic extrapolation
Comment: double extrapolation to ionic strength 0; also successfully modeling with pK2=9.1: logK=-7.5
 
1 data sets were retrieved