The Determinations of Some Metal Ions by Using Hexamminecobalt(III) Chloride and Sodium Thiosulfate as Precipitants
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概要
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1) When hexamminecobalt(III) chloride and sodium thiosulfate solutions were mixed, a precipitate was formed; the composition of this salt was found to be<BR> [Co(NH<SUB>3</SUB>)<SUB>6</SUB>](S<SUB>2</SUB>O<SUB>3</SUB>)Cl·H<SUB>2</SUB>O<BR>2) In addition to copper and lead, silver, cadium, mercury and bismuth were precipitated, forming insoluble metal complexes, by adding hexamminecobalt(III) chloride and sodium thiosulfate sloutions as precipitants to the solutions of these salts, except for bismuth salt, were found to be<BR> [Co(NH<SUB>3</SUB>)<SUB>6</SUB>][Ag(S<SUB>2</SUB>O<SUB>3</SUB>)<SUB>2</SUB>],<BR> [Co(NH<SUB>3</SUB>)<SUB>6</SUB>]<SUB>4</SUB>[Cd(S<SUB>2</SUB>O<SUB>3</SUB>)<SUB>3</SUB>]<SUB>3</SUB>·6H<SUB>2</SUB>O and<BR> [Co(NH<SUB>3</SUB>)<SUB>6</SUB>]<SUB>4</SUB>[Hg(S<SUB>2</SUB>O<SUB>3</SUB>)<SUB>3</SUB>]<SUB>3</SUB>·10H<SUB>2</SUB>O<BR>3) Various determination methods based on the formation of metal complexes were studied; that is, silver was studied by volumetrically measuring the excess of sodium thiosulfate with an iodine solution, copper and mercury, by gravimetrically weighing by EDTA titration after their complex salts had been decomposed.
- 社団法人 日本化学会の論文
著者
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Takashima Yoshimasa
Department Of Chemistry Faculty Of Science Kyushu University
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Kusaba Toyoaki
Department of Chemistry Faculty of Science Kyushu University
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Murakami Yoshio
Department of Chemistry Faculty of Science Kyushu University
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Yoshimura Jun
Department of Chemistry Faculty of Science Kyushu University
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Yoshimura J.
Department of Chemistry Faculty of Science Kyushu University
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