Vol. 12, Issue 3 (2023)

Author(s):
Vivek Kumar and Raj Kumar

Abstract:
Equilibrium constant or stability constant is used to determine the strength of interaction between reagents that make the final product after the formation of bonds. In general, stability means that a complex may be stored for a long time under suitable conditions or the compound may be existing under suitable conditions. Regarding how much is the concentration of complexes in solution, stability constant provides this information via calculations. These calculations are very important in many areas of science like chemistry, biology, and medicine. Stability of metal complexes may be affected by various factors like nature of central metal ion and ligand, chelating effect etc. In this study at different ionic strengths and temperatures, such as 25 °C, 30 °C, and 35 °C, overall stability constants (log K) of the complexes were obtained and thermodynamic stability constants (log K˚) at zero ionic strength were derived for each metal system for log K vs ionic strength plots.