1. REDOX Part 2

2. ROTTING!

3. RUST!

4. COMBUSTION!

5. This is a redox process by which YOUR BODY STORES ENERGY.

6. An oxidation-reduction reaction (redox for short) is: If you have one of these processes, you must have the other. Why?

7. The number of electrons lost and gained in a reaction must be equal. What Law demands this? You can use this fact to help balance difficult equations.

8. For example: the space shuttle was lifted off the earth by this tough redox reaction: NH 4 ClO 4 + Al → Al 2 O 3 + HCl + N 2 + H 2 O

9. The copper atoms LOST ELECTRONS ; i.e., they were Cu 0 (s) → Cu 2+ (aq) + 2e 1-

10. The silver ions GAINED ELECTRONS; i.e., they were 1e - + Ag 1+ (aq) → Ag 0 (s)

11. How will you remember which is OXIDATION, and which is REDUCTION?

12. This type of reaction is ___________ a redox reaction. Single replacement Combustion Combination Decomposition reactions Double replacement

13. We will be doing a demonstration that includes redox reactions. The demo is called the “Hindenburg.” It was the “pride” of Nazi Germany – and capable of crossing the Atlantic Ocean. (1930’s)

14. For our demonstration, we will create a model of the Hindenburg.

15. To generate the hydrogen gas: aluminum + hydrochloric acid

16. 1. __Mg + __Al(NO 3 ) 3 → __Mg(NO 3 ) 2 + __Al

17. 2. __Li + __CaCl 2 → __LiCl + __Ca

18. 3. __K + __H 3 PO 4 → __K 3 PO 4 + __H 2