Transfer of Electrons
An oxidation–reduction reaction
 transfers electrons from one reactant to another
Oxidation Is a Lo...
Oxidation and Reduction

2

General, Organic, and Biological Chemistry

Copyright © 2010 Pearson Education, Inc.
Oxidized or Reduced?

3

General, Organic, and Biological Chemistry

Copyright © 2010 Pearson Education, Inc.
Zn and Cu 2+

oxidation
Zn(s)
Silvery metal

Zn2+(aq) + 2ereduction
Cu2+(aq) + 2e-

4

General, Organic, and Biological Ch...
Electron Transfer from Zn to
Cu 2+
Oxidation: electron loss

Reduction: electron gain

5

General, Organic, and Biological...
Learning Check
Identify each of the following as:
1) oxidation or 2) reduction
__A. Sn(s)
__B. Fe3+(aq) + 1e−

Fe2+(aq)

_...
Solution
Identify each of the following as:
1) oxidation or 2) reduction
1 A. Sn(s)
2 B. Fe3+(aq) + 1e−

Fe2+(aq)

2 C. Cl...
Writing Oxidation and
Reduction Reactions
Write the separate oxidation and reduction reactions for the
following equation....
Learning Check
In light-sensitive sunglasses, UV light initiates an
oxidation–reduction reaction.
uv light
Ag+ + Cl−
Ag + ...
Solution
In light-sensitive sunglasses, UV light initiates an oxidationreduction reaction.
uv light
Ag+ + Cl−
Ag + Cl
A. W...
Learning Check
Identify the substances that are oxidized and reduced in
each of the following reactions:
A. Mg(s) + 2H+(aq...
Solution
Identify the substances that are oxidized and reduced in
each of the following reactions:
A. Mg is oxidized
Mg(s)...
Oxidation–Reduction in
Biological Systems
In biological systems, oxidation may involve
 the loss of H
 the gain of O
In ...
Oxidation–Reduction in
Biological Systems (continued)

14

General, Organic, and Biological Chemistry

Copyright © 2010 Pe...
Summar y of Oxidation and
Reduction

15

General, Organic, and Biological Chemistry

Copyright © 2010 Pearson Education, I...
Upcoming SlideShare
Loading in...5
×

Biological oxidation -4

114

Published on

Published in: Technology, Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
114
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
3
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Biological oxidation -4

  1. 1. Transfer of Electrons An oxidation–reduction reaction  transfers electrons from one reactant to another Oxidation Is a Loss of electrons Zn(s) Zn2+(aq) + 2e− Reduction Is a Gain of electrons Cu2+(aq) + 2e− Cu(s) 1 (OIL) (RIG) General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
  2. 2. Oxidation and Reduction 2 General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
  3. 3. Oxidized or Reduced? 3 General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
  4. 4. Zn and Cu 2+ oxidation Zn(s) Silvery metal Zn2+(aq) + 2ereduction Cu2+(aq) + 2e- 4 General, Organic, and Biological Chemistry Cu(s) Copyright © 2010 Pearson Education, Inc.
  5. 5. Electron Transfer from Zn to Cu 2+ Oxidation: electron loss Reduction: electron gain 5 General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
  6. 6. Learning Check Identify each of the following as: 1) oxidation or 2) reduction __A. Sn(s) __B. Fe3+(aq) + 1e− Fe2+(aq) __C. Cl2(g) + 2e− 6 Sn4+(aq) + 4e− 2Cl−(aq) General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
  7. 7. Solution Identify each of the following as: 1) oxidation or 2) reduction 1 A. Sn(s) 2 B. Fe3+(aq) + 1e− Fe2+(aq) 2 C. Cl2(g) + 2e− 7 Sn4+(aq) + 4e− 2Cl−(aq) General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
  8. 8. Writing Oxidation and Reduction Reactions Write the separate oxidation and reduction reactions for the following equation. 2Cs(s) + F2(g) 2CsF(s) Each cesium atom loses an electron to form a cesium ion. 2Cs(s) 2Cs+(s) + 2e− oxidation Each fluorine atom gains an electron to form a fluoride ion. F2(s) + 2e– 8 General, Organic, and Biological Chemistry 2F−(s) reduction Copyright © 2010 Pearson Education, Inc.
  9. 9. Learning Check In light-sensitive sunglasses, UV light initiates an oxidation–reduction reaction. uv light Ag+ + Cl− Ag + Cl A. Which reactant is oxidized? B. Which reactant is reduced? 9 General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
  10. 10. Solution In light-sensitive sunglasses, UV light initiates an oxidationreduction reaction. uv light Ag+ + Cl− Ag + Cl A. Which reactant is oxidized? Cl − Cl− Cl + 1e− B. Which reactant is reduced? Ag+ Ag+ + 1e− 10 General, Organic, and Biological Chemistry Ag Copyright © 2010 Pearson Education, Inc.
  11. 11. Learning Check Identify the substances that are oxidized and reduced in each of the following reactions: A. Mg(s) + 2H+(aq) Mg2+(aq) + H2(g) B. 2Al(s) + 3Br2(g) 11 General, Organic, and Biological Chemistry 2AlBr3(s) Copyright © 2010 Pearson Education, Inc.
  12. 12. Solution Identify the substances that are oxidized and reduced in each of the following reactions: A. Mg is oxidized Mg(s) Mg2+(aq) + 2e− H+ is reduced 2H+ + 2e− H2 B. Al is oxidized Br is reduced 12 General, Organic, and Biological Chemistry 2Al 2Br + 2e− 2Al3+ + 6e− 2Br− Copyright © 2010 Pearson Education, Inc.
  13. 13. Oxidation–Reduction in Biological Systems In biological systems, oxidation may involve  the loss of H  the gain of O In biological systems, reduction may involve  the gain of H  the loss of O 13 General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
  14. 14. Oxidation–Reduction in Biological Systems (continued) 14 General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
  15. 15. Summar y of Oxidation and Reduction 15 General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×