Calculating Equilibrium Constants in the SnCl2–H2O–NaOH System According to Potentiometric Titration Data

Resumo

The potentiometric titration of tin chloride SnCl₂ is performed in the concentration range of 0.00009–1.1 mol/L with a solution of sodium hydroxide NaOH. According to potentiometric titration data based on modeling equilibria in the SnCl₂–H₂O–NaOH system, basic equations are generated for the main processes, and instability constants are calculated for the resulting hydroxo complexes and equilibrium constants of low-soluble tin(II) compounds. The data will be of interest for specialists in the field of theory of solutions.