The hydrolysis of Sn2+ has been studied In various Ionic media (NaNO3, NaCl, and artificial seawater) from 0.1 to 1 M and 20 °C by using differential pulse anodic stripping voltammetry. The shift In the potential of the stripped Sn2+ was determined as a function of pH (2-11) at a Sn4+ concentration of 5.4 X 10-7 M. These results were used to determine β1, β2, and β3 for the hydrolysis of Sn2+ and β1 and β2 for the formation of chloro, bromo, and sulfate complexes. Our values for the hydrolysis of chloro and bromo complexes of Sn2+ are in reasonable agreement with the literature values. The distribution or speclatlon of various species of tin(II) In NaNO3, NaCl, and artificial seawater were determined from the calculated stability constants.
ASJC Scopus subject areas
- Analytical Chemistry