Untersuchungen zur Umsetzung von Kaliumjodat mit Ammoniumsalzen in wäßriger Lösung

On the interaction of potassium iodate with ammonium salts in aqueous solution A quantitative metathetic conversion of KIO₃ into NH₄IO₃ in aqueous medium, which may be expected from the solubility data, can not be achieved. Instead, mixed crystals K_x(NHJ₄)_1?xIO₃ of the perovskite type structure do crystallize, as has been revealed from X-ray powder diagrams.     

Zur Kinetik des Abbaus von Polykieselsäure (H2SiO3)x in wäßriger Lösung

The degradation of polysilicic acid has been investigated in the region of pH = 1.3–5.5 and 0–65°C. At pH = 3.3 there was found a maximum (18.5 kcal/mol) and at pH = 4.3 a minimum (15.6 kcal/mol) of the activation of this reaction. Nucleophiles and HF accelerate the degradation.