1. Ch.9: Lesson 5 -Intro to Electrochemistry- Ch.9: Lesson 5 -Intro to Electrochemistry-

2. Do Now: Add e- to Balance Cl  Cl Mn  Mn Cl  Cl Mn  Mn 0 -3 +4 +7

3. Electrochemistry  Branch of chemistry that deals with relations between electrical and chemical processes Areas of focus  1. Redox potential from Table J   2. ?  3. ?  Branch of chemistry that deals with relations between electrical and chemical processes Areas of focus  1. Redox potential from Table J   2. ?  3. ?

4. Redox Potentials and Metal/Nonmetal Activity  Table J  General rule: Elements at top are more reactive  Metals = high potential to be oxidized  Nonmetals = high potential to be reduced  Table J  General rule: Elements at top are more reactive  Metals = high potential to be oxidized  Nonmetals = high potential to be reduced

5. Table J  1. Which metal has the greatest potential to be oxidized?  2. Which nonmetal has the greatest potential to be reduced?  3. Which is more active, Rb or Cu?  4. Co or Fe?  5. Ag or Sr?  1. Which metal has the greatest potential to be oxidized?  2. Which nonmetal has the greatest potential to be reduced?  3. Which is more active, Rb or Cu?  4. Co or Fe?  5. Ag or Sr?

6. Metals on Table J  Metals higher on Table J more likely to be oxidized  Metals lower on Table J more likely to be reduced  Which reaction is more likely to happen?  Metals higher on Table J more likely to be oxidized  Metals lower on Table J more likely to be reduced  Which reaction is more likely to happen?  1) Cu + Al  Cu + Al  2) Cu + Al  Cu + Al +2 0 0 +3 0 +3 +2 0

7. Nonmetals on Table J  Nonmetals higher on Table J more likely to be reduced  Nonmetals lower on Table J more likely to be oxidized  Which reaction is more likely to happen?  Nonmetals higher on Table J more likely to be reduced  Nonmetals lower on Table J more likely to be oxidized  Which reaction is more likely to happen?  1) Cl 2 + 2 F  2 Cl + F 2  2) F 2 + 2 Cl  2 F + Cl 2 0 -1 -1 0

8. Practice  Which of these metals has the greatest potential to be oxidized? The least? Fe Zn Cu Na Which nonmetal has the greatest potential to be oxidized? The least? F 2 Cl 2 Br 2 I 2  Which of these metals has the greatest potential to be oxidized? The least? Fe Zn Cu Na Which nonmetal has the greatest potential to be oxidized? The least? F 2 Cl 2 Br 2 I 2

9. When these pairs react, which is oxidized and which is reduced?