Lecture 23 10/28/05. 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.

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Lecture 23 10/28/05

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 = ?

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 M NaOH.

50 mL of 0.02 M MES with 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 = ?

How does pK a or concentration change the titration curve?

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

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

Finding endpoint with pH electrode

Titration of H 6 A with NaOH