1. Announcements Wednesday, December 5 FINAL When: Tuesday, December 11, 5:30 - 7:30 Where: in our usual room. YOU WILL NEED A PHOTO I.D. (SUCH AS DRIVER'S LICENSE OR LSU STUDENT IDENTIFICATION CARD) BRING YOUR ONE-PAGE SET OF NOTES. BRING “problem” exams (misgraded, etc.) HELP SESSIONS: Sunday 5 pm Williams 202 Monday 4 pm Choppin Lobby Monday 5 pm Williams 202 JUST DROP IN FOR HELP!!!! I HAVE NOT SEEN MANY ???’S ON THE PRP’S!!!

2. RedOx ReductionOxidation Lose oxygenGain oxygen Gain hydrogenLose hydrogen Gain electronsLose electrons

3. A sample case 2Na + 2H 2 O  2Na + + H 2 + 2OH - Na was oxidized: Na  Na + + e - (electron lost) H was reduced: lost oxygen O no change: lost H but gained e - Remember…we actually ran this reaction by dumping some sodium into water.

4. Another one 2 CH 3 OH  2 CH 2 O + H 2 C: ??? H: ??? O: ???

5. Still another one (related to “butter vs. margarine”) CH 3 CH 2 CH 2 CH=CHCH 2 CH 3 + H 2  CH 3 CH 2 CH 2 CH-CHCH 2 CH 3 HH C ????? H ?????

6. Secret Agents: all part of the semantics nightmare that is RedOx Something that promotes reduction: reducing agent Example: K, Na, H, LiAlH 4 Something that promotes oxidation: oxidizing agent Example, O, F, Br, K 2 Cr 2 O 7

7. Main Applications of RedOx Recovery of metals from ores Corrosion Prevention of corrosion Batteries

8. And the sons of Pullman porters & the sons of engineers Ride their fathers' magic carpet made of steel Mothers with their babes asleep, rockin' to the gentle beat And the rhythm of the rails is all they feel City of New Orleans— Steve Goodman Steel!

9. Reducing Iron Ore to Make Steel: from rust to riches 2 Fe 2 O 3 + 3C  4 Fe + 3CO 2 Rust From coal

10. RedOx & Geography COAL IRON ORE CARS

11. Electro-reduction for Aluminum 2Al 2 O 3  4Al + 3O 2 Electrons out Electrons in Power Plant

12. Hydroelectric Power Hydroelectric Power Aircraft Industry

13. Why do we recycle aluminum?

14. Corrosion 2 Fe  2 Fe +2 + 4 e - 2H 2 O + 4e - + O 2  4OH - Electrons travel down nail

15. Batteries!