1. Lecture 23 10/28/05

2. 50 mL of 0.02 M KOH with 0.1 M HBr Construct curve from 4 points Initial pH X = 0 mL, Y = ? Equivalence point X = V eq, Y = 7 Before Equivalence point X = ?, Y = ? After Equivalence point X = ?, Y = ?

3. Titration of a weak acid with strong base 50 mL of 0.02 M MES [2-(n-morpholino)ethanesulfonic acid] pK a = 6.15 with 0.100 M NaOH.

6. 50 mL of 0.02 M MES with 0.100 M NaOH. Construct curve from 4 points Initial pH X = 0 mL, Y = ? Equivalence point X = V eq, Y = ? Before Equivalence point X = ½ V eq, Y = pK a After Equivalence point X = ?, Y = ?

7. How does pK a or concentration change the titration curve?

8. Titration of 10.0 mL of 0.100 M B (base) pK b1 = 4.00 pK b2 = 9.00 with 0.100 M HCl

9. Titration of 10.0 mL of 0.100 M B (base) with 0.100 M HCl pK b1 = 4.00 pK b2 = 9.00

10. Finding endpoint with pH electrode

12. Titration of H 6 A with NaOH