Collect. Czech. Chem. Commun. 1979, 44, 495-501
https://doi.org/10.1135/cccc19790495

Kinetics of aquation of bromopentaamminechromium(III) and bromopentaamminecobalt(III) ions in water-alcohol solvents

Vladislav Holba and Oľga Grančičová

Department of Physical Chemistry, Comenius University, 816 50 Bratislava

Abstract

The rate constants and activation parameters of aquation of bromopentaamminechromium(III) and bromopentaamminecobalt(III) ions were determined in mixtures of water with methanol, ethanol, 2-propanol, and tert-butyl alcohol. A compensation effect was observed in the first three mixtures and the isokinetic temperature was determined. The rate constant were correlated with the ionizing strength of the solvent. The influence of interactions between the water and alcohol molecules on the reaction kinetics is discussed.