Solvent Extraction Studies of the Hydrolysis of Antimony(III) in Tracer Concentrations

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概要

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• The hydrolysis of antimony(III) ions was investigated through solvent extraction with dithizone–carbon tetrachloride solutions. In a 3 M (H, Na)ClO<SUB>4</SUB> solution, a tracer concentration of antimony(III) (<10<SUP>−8</SUP>M) was found in the form of a monovalent cation, Sb(OH)<SUB>2</SUB><SUP>+</SUP> or SbO<SUP>+</SUP>, and a neutral species, Sb(OH)<SUB>3</SUB> or SbO(OH). The former is predominant in strongly acidic media, while the latter becomes abundant in the weakly acidicto-neutral region. One of the constants of successive hydrolysis, <I>K</I><SUB>1</SUB>=[Sb(OH)<SUB>2</SUB><SUP>+</SUP>][Sb(OH)<SUB>3</SUB>]<SUP>−1</SUP>[H<SUP>+</SUP>]]<SUP>−1</SUP>, was calculated from the distribution ratios, giving the result: log<I>K</I><SUB>1</SUB>=1.23<SUB>6</SUB>±0.06. The chemical composition of the extracted species was estimated to be Sb(HDz)<SUB>3</SUB>.

• 公益社団法人 日本化学会の論文

著者

• Shoji Hitoshi

  Department Of Applied Physics Faculty Of Engineering Hokkaido University

• Shoji Hitoshi

  Department of Chemistry, Faculty of Science, The University of Tokyo

• Mabughi Hisao

  Department of Chemistry, Faculty of Science, The University of Tokyo

• Saito Nobufusa

  Department of Chemistry, Faculty of Science, The University of Tokyo

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