1 / 32

Homework

Homework. Questions 1-3 on page 640. Homework. 1. Identify each of the following changes as either oxidation or reduction. Recall that e - is the symbol for an electron. I 2 + 2e - → 2I -. Homework.

arnaud
Download Presentation

Homework

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Homework Questions 1-3 on page 640

  2. Homework • 1. Identify each of the following changes as either oxidation or reduction. Recall that e- is the symbol for an electron. • I2 + 2e- → 2I-

  3. Homework • 1. Identify each of the following changes as either oxidation or reduction. Recall that e- is the symbol for an electron. • I2 + 2e- → 2I- • reduction

  4. Homework 1. Identify each of the following changes as either oxidation or reduction. Recall that e- is the symbol for an electron. b. K → K+ + e-

  5. Homework 1. Identify each of the following changes as either oxidation or reduction. Recall that e- is the symbol for an electron. b. K → K+ + e- oxidation

  6. Homework 1. Identify each of the following changes as either oxidation or reduction. Recall that e- is the symbol for an electron. c. Fe2+ → Fe3+ + e-

  7. Homework 1. Identify each of the following changes as either oxidation or reduction. Recall that e- is the symbol for an electron. c. Fe2+ → Fe3+ + e- oxidation

  8. Homework 1. Identify each of the following changes as either oxidation or reduction. Recall that e- is the symbol for an electron. d. Ag+ + e- → Ag

  9. Homework 1. Identify each of the following changes as either oxidation or reduction. Recall that e- is the symbol for an electron. d. Ag+ + e- → Ag reduction

  10. Homework 2. Identify what is oxidized and what is reduced in the following processes. a. 2Br- + Cl2→ Br2 + 2Cl-

  11. Homework 2. Identify what is oxidized and what is reduced in the following processes. a. 2Br- + Cl2→ Br2+ 2Cl- oxred

  12. Homework 2. Identify what is oxidized and what is reduced in the following processes. b. 2Ce + 3Cu2+ → 3Cu + 2Ce3+

  13. Homework 2. Identify what is oxidized and what is reduced in the following processes. b. 2Ce + 3Cu2+ → 3Cu + 2Ce3+ redox

  14. Homework • 2. Identify what is oxidized and what is reduced in the following processes. • 2Zn + O2→ 2ZnO

  15. Homework • 2. Identify what is oxidized and what is reduced in the following processes. • 2Zn + O2→ 2ZnO • oxred

  16. Homework • 3. Identify the oxidizing agent and the reducing agent in each of the following reactions. • Mg + I2→ Mg I2

  17. Homework 3. Identify the oxidizing agent and the reducing agent in each of the following reactions. a. Mg + I2→ Mg I2 redox

  18. Homework • 3. Identify the oxidizing agent and the reducing agent in each of the following reactions. • 2Na + 2H+ → 2Na+ + H2

  19. Homework 3. Identify the oxidizing agent and the reducing agent in each of the following reactions. b. 2Na+ 2H+ → 2Na+ + H2 red ox

  20. Homework • 3. Identify the oxidizing agent and the reducing agent in each of the following reactions. • H2S + Cl2→ S + 2HCl

  21. Homework 3. Identify the oxidizing agent and the reducing agent in each of the following reactions. c. H2S+ Cl2→ S + 2HCl red ox

  22. Determining Oxidation Numbers There are nine rules. You do not have to memorize them. But you do have to use them.

  23. Determining Oxidation Numbers KClO3

  24. Determining Oxidation Numbers KClO3 O is always -2 (rule 5) K is +1 (rule 7) The sum is zero (rule 8)

  25. Determining Oxidation Numbers KClO3 NK + NCl + 3(NO) = 0 O is always -2 (rule 5) K is +1 (rule 7) The sum is zero (rule 8)

  26. Determining Oxidation Numbers KClO3 +1 + NCl + 3(-2) = 0 O is always -2 (rule 5) K is +1 (rule 7) The sum is zero (rule 8)

  27. Determining Oxidation Numbers KClO3 NCl = +5 O is always -2 (rule 5) K is +1 (rule 7) The sum is zero (rule 8)

  28. Determining Oxidation Numbers SO32- O is always -2 (rule 5) The sum is -2 (rule 9)

  29. Determining Oxidation Numbers SO32- NS + 3(NO) = -2 O is always -2 (rule 5) The sum is -2 (rule 9)

  30. Determining Oxidation Numbers SO32- NS - 6 = -2 O is always -2 (rule 5) The sum is -2 (rule 9)

  31. Determining Oxidation Numbers SO32- NS = +4 O is always -2 (rule 5) The sum is -2 (rule 9)

  32. Try a few on your own: Due at the end of the period: Problems 4-9 on pages 642-643 Homework: Problems 10-11 on page 643

More Related