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The Kinetics and Mechanism of Aquation of Carbonato Complexes of Cobalt (111). I. The Acid-Catalyzed Aquation of Carbonatopentaamminecobalt ( 111) Ion T. P. Dasgupta and G . M. Harris' Contribution f r o m the State Uniuersity of New York at Bufalo, Buffalo, New York 14214. Received May 27, 1968
Abstract: Stopped-flow technique has enabled a study of the reaction over the range 1 < pH < 8 and 25 < T < 45 O at I = 0.5 M . The rate-determining reaction is Co(NH&C03H2++ C O ( N H ~ ) ~ O H ~C02, + and is accompanied by various proton-transfer equilibria. The observed pseudo-first-order rate constant, kobJd,is independent of the acidity for pH
