Figure : Left: Influence of different mineral acids at equimolar proton concentrations on the course of pH (top) and conductivity (bottom) during hydration of CAC1 at w/s = 100.; Grey dotted vertical lines highlight the temporal accordance of the pH reaching 9 and the steep increase in conductivity.; Right: Thermodynamic calculation of the pH in dependency of the reaction degree for the reference system (water) and with the five mineral acids at equimolar proton concentration (82 µmol/g CAC ). The curves with HCl, HClO 4 , and HNO 3 exactly overlap.