Question

how much silica can dissolve in water?

k=10^-2.78

Answer 1

the dependence of the rate constants on the concentration of catalytically active hydroxyl ions as an adsorption of these ions on the silica gel surface. The solubility of silica gel increases with increasing pH,. The solubility dependence on pH, is influenced both by the specific surface area of the gel and gel time. The structure of the gels is determined by the gel time. High solubilities can be achieved by a large specific surface area and a small gel time.