### Determination of Formation Constants and Association and Dissociation Rate Constants of Complex Ions by Means of Ion-Transfer VoltammetryDetermination of Formation Constants and Association and Dissociation Rate Constants of Complex Ions by Means of Ion-Transfer Voltammetry

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 Author Katano, Hajime ♦ Tanaka, Kotaro ♦ Senda, Mitsugi Source J-STAGE Content type Text Publisher The Japan Society for Analytical Chemistry Language English
 Subject Keyword Formation constant ♦ rate constant ♦ complex ion ♦ ion-transfer voltammetry ♦ facilitated transfer Abstract Ion-transfer voltammetry of the facilitated transfer of $Pb^{2+}$ ion by 1, 4, 7, 10, 13, 16-hexathiacyclooctadecane across the polarizable nitrobenzene/water interface has been applied to the study of complexes of $Pb^{2+}$ ion with hydrophilic ligands, $acetate^{-},$ $tartarate^{2-},$ and $citrate^{3-}$ ions in aqueous media. The formal formation constants of 1:1, 1:2, and 1:3 $Pb^{2+}-acetate^{-}$ complexes were determined to be $10^{2.3}M^{-1},$ $10^{3.0}M^{-2},$ and $10^{4.0}M^{-3}.$ The dissociation and association rate constants were determined to be $2.1×10^{3}s^{-1}and$ $2.2×10^{7}$ $M^{-1}$ $s^{-1}$ for 1:1 $Pb^{2+}$ $-tartarate^{2-}$ complex and $4.5×10^{4}s^{-1}$ and $8.O×10^{10}M^{-1}$ $s^{-1}$ for 1:1 $Pb^{2+}$ $-citrate^{3-}$ complex, respectively. ISSN 09106340 Learning Resource Type Article Publisher Date 1997-01-01 e-ISSN 13482246 Journal Analytical Sciences(analsci1985) Volume Number 13 Issue Number Supplement Page Count 2 Starting Page 299 Ending Page 300