1987 Volume 60 Issue 3 Pages 877-883
The backward solvent extraction with dithizone(H2dz)–CCl4 solutions was used to examine the chemical species of bismuth(III) in 1 mol dm−3 of a (H,Na)Cl solution. A tracer concentration of bismuth(III) (ca. 10−11 mol dm−3) was found to exist mainly in the form of [BiCl5]2−, [BiCl5(OH)]3−, [BiCl4(OH)]2−, and [BiCl3(OH)3]3− in the (H,Na)Cl solutions. The constants of the successive hydrolysis, β1, β2, and β3, were calculated by using the distribution data. The resulting logβ1, logβ2, and logβ3 values were 10.9, 17.5, and 30.2 respectively. The chemical composition of the extracted species was most probably [Bi(Hdz)3].
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