1. Lecture 11/17/07 CHE132: General Chemistry II Dr. Jimmy Hauri

2. Honors lab is meeting this week Other labs start next week Pre-lab will be due

3. SYLLABUS

4. Quiz 1

5. A ⇆ B Rate based on: Constant Concentration

6. time A ⇆ B 0120 1 2 3 4 5 time A ⇆ B 0012 1 2 3 4 5 time A ⇆ B 048 1 2 3 4 5 k f = ¼ k r = ½

7. Observations???

8. Rates (forward and reverse) are equal Concentrations stop changing Reactions are still going ‘dynamic equilibrium’ Independent of initial concentrations At Equilibrium

9. Rates are equal

10. Law of Mass Action