Szukana fraza: [Abstract = "The proces of Mn2\+ oxygenation with air oxygen has been investigated in the pH range form 0,0 to 12,5. The beginning of this process is stated by pH = 2,2, 50% Mn'' is oxydized by pH = 7,0, and 100% by NaOH added in a stoichiometric quantity to full precipitation of Mn\(OH\)2. This fact can prove the hypothesis, the oxygenation ot Mn'' with air is a topochemical one, namely an oxidation of Mn''\(OH\)2 and not of the manganese \(II\) ion \- Mn2\+."]
