Influence of ion-background changes on the aquation rate of [CrCl3(H2O)3)]

The influence of change in ion background on the aquation rate constants of CrCl₃(H₂O)₃)] was studied spectrophotometrically at 25°C over a broad range of ionic strengths (up to several moles/liter). The electrolytes KBr, KCl, NaClO₄, NaCl, NaBr, NaNO₃, HClO₄, HCl, LiClO₄, CaCl₂, LaCl₃, and ethanol were used. It is shown that the rate constant decreases with increasing electrolyte concentration in the electrolytic media (to 0.3 log unit in some of them), while increasing in ethanol media with increasing content of the alcohol.Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk. Translated fromIzvestiya Akademii Nauk, Seriya Khimicheskaya, No. 12, pp. 2695–2699, December, 1992.