1. Exam III Thursday, December 7, 7:00-9:00 pm; rooms are on the website.
Conflict: (12/7) 4:30-6:30 pm in 101 Transportation; sign up in 1026 Chem Annex
Conflict with conflict? me right away.
Review sessions:
Monday, December 4: 7-9 pm 165 Noyes Lab
Tuesday, December 5: 7-9 pm 165 Noyes Lab

3. Remaining Lectures Wednesday, December 6: review for Exam 3.
Friday, December 8: go over Exam 3.
Monday, December 11: review the semester; discuss the final exam; revisit demonstrations.
Wednesday, December 13: no lecture; office hours in 3014 Chem Annex from 10am-12pm.

4. Clicker Question
Consider the activated complex demonstration. Suppose we run two trials, one at 55C and one at 65C. The times for the reaction are 85 seconds and 41 seconds, respectively. Determine the activation energy for this reaction. Assume the frequency factor, A, to be constant.
a) 261 J/mol
b) 663 J/mol
c) kJ/mol
d) kJ/mol
e) kJ/mol

5. Chapter 15 #91

6. Chapter 15

7. Previous Exam Question
Consider the “Magic Genie” demonstration, in which hydrogen peroxide decomposed to water and oxygen gas with the aid of a catalyst. The activation energy of this reaction (uncatalyzed) is 70.0 kJ/mol. We added a catalyst that lowered the activation energy (at 20C) to 42 kJ/mol.
Theoretically, to what temperature (C) would we have to heat the hydrogen peroxide solution so that the rate of the uncatalyzed reaction was equal to the rate of the catalyzed reaction? Assume the frequency factor A to be constant.