Studies in Zirconium Oxide Sols. Part II. Hydration of Micelles in Zirconium Oxide Sols

Hydration of the micelles in the case of zirconium oxide sol has been studied. by considering the distribution of an electrolyte (NH₄Cl) as s reference substance across a semipermeable membrane. Neglecting the membrane equilibrium effect, the value of hydration comes out to be 62 moles of water per mole of zirconium oxide. This value is in agreement with that obtained by viscosity method. The charge on the micelles has been found to be 0.4 m.e. of N$O_3^{-}$ per g. of zirconium oxide.