The kinetics of the reaction between sodium hydroxide and iodopentamminecobalt(III) perchlorate in aqueous solution

Abstract

Second-order rate constants for the reaction between iodopentamminecobalt(III) and hydroxide ions were measured spectrophotometrically at low ionic strengths in the temperature range 2·6–20°C. The variation of rate constants with ionic strength follows the predictions of the Brönsted-Bjerrum theory. At zero ionic strength the variation of the rate constant with respect to temperature is reproduced by the equation: k 2 0(1. mole −1)= 4.19x10 21 exp(−27.812±251) RT