Formula omitted], [formula omitted], [formula omitted] and [formula omitted] comparative equilibrium study of alkali metal cation hydroxide complexes in aqueous solutions. First numerical value for CsOH formation

Abstract

7 Li , 23 Na , 39 K and 133 Cs NMR spectrometric comparative study of 0.05 M alkali metal chloride hydrolysis in aqueous solutions 3.4 M Me 4 NCl/ Me 4 NOH at 25 °C is performed. It is found that chemical shifts of all nuclei involved are sensitive to variations of ionic strength and pH. Stability constants for Li +, Na +, K + and Cs + lg K( M+ OH⇔ MOH) are found to be −0.04 (0.05), −0.93 (0.04), −0.7 (0.2) and −0.8 (0.1), respectively. The stability of CsOH is estimated to be the same as that of NaOH and KOH within an experimental error. No evidence of chloro-complexes formation was found.