1. Lon-Capa Lon-Capa: 5th HW assignment due Friday 10/21 by 5 pm.
Lon-Capa: 4th Quiz due Sunday, 1023 by 10 pm. Opens Friday 10/21 at 5 pm.

2. Exam II
Tuesday, October 25, 7:00-9:00 pm; rooms are on the website (same as before).
Conflict: (10/25) 4:30-6:30 pm in 165 NL; sign up in 367 NL
Conflict with conflict? me right away.
Practice Exam is Posted
Review session:
Saturday, 10/22 from 4:00-5:00 pm in 217 NL
Sunday, 1023 from 7:00-8:00 pm in 161 NL

3. Clicker Question Consider the spontaneous reaction:
2KClO3(s)  2KCl(s) + 3O2(g)
Is the reaction endothermic or exothermic?
a) Endothermic
b) Exothermic
c) More information is needed.
d) I do not know how to answer this question.

5. Recall: Questions To Consider
Why do systems reach equilibrium? That is, why doesn’t the ball go all the way down the hill?

6. Free energies change as a reaction progresses

7. “Ball on a Hill”: Gibbs Free Energy

8. The change in free energy to reach equilibrium