ISSN 1070-4272, Russian Journal of Applied Chemistry, 2011, Vol. 84, No. 6, pp. 1073−1074. © Pleiades Publishing, Ltd., 2011. Original Russian Text © Yu.P. Perelygin, 2011, published in Zhurnal Prikladnoi Khimii, 2011, Vol. 84, No. 6, pp. 1053−1054. BRIEF COMMUNICATIONS Calculation of a Relative Fraction of Metal Ion Passed in Hydroxy Complex Depending on pH of a Solution Yu. P. Perelygin Penza State University, Penza, Russia Received August 13, 2010 DOI: 10.1134/S1070427211060310 Deposition of metals in the form of hydroxides is used In solution, that contains a ligand OH capable of form- –y+x in hydrometallurgy , in analytical chemistry  and ing one complex compound with metal [M(OH) ], wastewater treatment [3, 4]. and a precipitate of metal hydroxide [M(OH) ], two equilibrium are set: Earlier  an equation was derived to determine the pH of the beginning and end of precipitation of hydrox- x+ – M(OH) ↔ M + xOH , (а) ides. A purpose of this work is determination of the pH of –y+x x+ – [M(OH) ] ↔ M + yOH , (b) dissolution of metal hydroxides capable to form hydroxy complexes that unfortunately can not be calculated by which are described by equations  the
Russian Journal of Applied Chemistry – Springer Journals
Published: Jul 16, 2011
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