1. Lecture 203/16/05 Exam: Next Wed Environmental Club Meeting: Today at 6 Basement of Hagan Monday: Seminar

2. Titration of a polyprotic acid http://www.creative-chemistry.org.uk/alevel/module4/documents/N-ch4-05.pdf

3. Sample (100 mL – 0.1 M) Titrant (0.2 M) Initial pH pH at equivalence point pH at 2X equivalence point X-axis at equivalence point Strong acid Strong base Weak acid Strong base Strong acid Weak base Strong acid Give examples of: Strong acid Strong base Weak acid Weak base

4. Give the identity and concentration of the titrated sample (50 mL) represented by the blue line. KbKb Hydroperoxide4.2 x 10 -3 Ammonia1.8 x 10 -5 Hypochlorite2.86 x 10 -7 Pyridine1.5 x 10 -9 Aniline4 x 10 -10