1. Redox Titrimetry and Potentiometry

2. Redox Titrations Titrate 50.0mL of 0.050 M Fe 2+ vs 0.100M Ce 4+ How do we observe the end point? Is the equilibrium constant large enough? To Observe End Point:

3. Redox Titrations Titrate 50.0 mL 0.050 M Fe 2+ vs 0.100 M Ce 4+ Use Pt Indicator Electrode: E pt = E Fe3+/Fe2+ = E Ce4+/Ce3+ at Equilibrium a) Add 10.0 mL Ce 4+ :

4. Redox Titrations Titrate 50.0 mL 0.050 M Fe 2+ vs 0.100 M Ce 4+ b) At 50% of Titration (12.50 mL Ce 4+ )

5. Redox Titrations Titrate 50.0 mL 0.050 M Fe 2+ vs 0.100 M Ce 4+ c) Just Before Equivalence Point (24.90 mL Ce 4+ )

6. Redox Titrations Titrate 50.0 mL 0.050 M Fe 2+ vs 0.100 M Ce 4+ d) Just Beyond Equivalence Point (25.10 mL Ce 4+ )

7. Redox Titrations Titrate 50.0 mL 0.050 M Fe 2+ vs 0.100 M Ce 4+ e) Equivalence Point Potential (25.00 mL Ce 4+ )

8. Redox Titrations Titrate 50.0 mL 0.050 M Fe 2+ vs 0.100 M Ce 4+ e) Equivalence Point Potential (25.00 mL Ce 4+ )

9. Redox Titrations Titrate 50.0 mL 0.050 M Fe 2+ vs 0.100 M Ce 4+