1. Complex Equilibria

2. Metal Complex
Monodentate ligands, e.g., NH3 and Cl- 3+ 2-

3. Chelate complexes Bidentate ligands:
(greek. χηλή (chēle): engl: crab, pol: kleszcze, szczypce kraba)

4. Chelate complexes Polydentate ligands
(greek. χηλή (chēle): engl: crab, pol: kleszcze, szczypce kraba)

5. Metal-EDTA Complex

6. Chelate Complexes

7. The chelate effect

8. The chelate effect

9. The chelate effect
Increase of diorder
Increase of entropy S

10. The chelate effect Increase of diorder Increase of entropy S
Gibbs-Helmholtz Equation

11. Chelate effect Ni

12. EDTA-Komplexe

13. The philosophy of conditional constants:
Give equilibrium constants for cases deviating from the standard conditions for which the equilibrium constant of a single equilibrium is defined, i.e., give equilibrium constants for “complex conditions”