1. Preview Multiple Choice Short Answer Extended Response Standardized Test Preparation Chapter 19

2. Standardized Test Preparation Multiple Choice 1.In the following reaction, which species is reduced? A.K B.Br 2 C.All of the above D.None of the above Chapter 19

3. 1.In the following reaction, which species is reduced? A.K B.Br 2 C.All of the above D.None of the above Chapter 19 Standardized Test Preparation Multiple Choice

4. 2.The oxidation number of the sulfur atom in the A.+2. B.−2. C.+6. D.+4. Chapter 19 Standardized Test Preparation Multiple Choice

5. 2.The oxidation number of the sulfur atom in the A.+2. B.−2. C.+6. D.+4. Chapter 19 Standardized Test Preparation Multiple Choice

6. 3.A half-reaction A.involves a change in the oxidation state of an element. B.always contains H 2 O molecules. C.always contains H + ions. D.All of the above Chapter 19 Standardized Test Preparation Multiple Choice

7. 3.A half-reaction A.involves a change in the oxidation state of an element. B.always contains H 2 O molecules. C.always contains H + ions. D.All of the above Chapter 19 Standardized Test Preparation Multiple Choice

8. 4.In the following reaction, which is the oxidizing agent? A.AgNO 2 B.Cl 2 C.KOH D.KCl Chapter 19 Standardized Test Preparation Multiple Choice

9. 4.In the following reaction, which is the oxidizing agent? A.AgNO 2 B.Cl 2 C.KOH D.KCl Chapter 19 Standardized Test Preparation Multiple Choice

10. 5.What are the oxidation states (in increasing order) of the element that undergoes disproportionation in the following reaction: A.−1, 0, +2 B.−1, 0, +1 C.−2, −1, 0 D.None of the above Chapter 19 Standardized Test Preparation Multiple Choice

11. 5.What are the oxidation states (in increasing order) of the element that undergoes disproportionation in the following reaction: A.−1, 0, +2 B.−1, 0, +1 C.−2, −1, 0 D.None of the above Chapter 19 Standardized Test Preparation Multiple Choice

12. 6.Which reaction is a redox reaction? A. B. C. D. Chapter 19 Standardized Test Preparation Multiple Choice

13. Chapter 19 Standardized Test Preparation Multiple Choice 6.Which reaction is a redox reaction? A. B. C. D.

14. 7.Arrange the following in order of increasing oxidation number of the sulfur atom: A. B. C. D. Chapter 19 Standardized Test Preparation Multiple Choice

15. Chapter 19 Standardized Test Preparation Multiple Choice 7.Arrange the following in order of increasing oxidation number of the sulfur atom: A. B. C. D.

16. 8.Which answer contains the correct information about the following reaction: A.This reaction is a decomposition reaction and not a redox reaction. B.This reaction is a redox reaction in which the lead is reduced and the oxygen is oxidized. C.This reaction is a disproportionation reaction. D.This reaction is a redox reaction in which the nitrogen is reduced and the oxygen is oxidized. Chapter 19 Standardized Test Preparation Multiple Choice

17. Chapter 19 Standardized Test Preparation Multiple Choice 8.Which answer contains the correct information about the following reaction: A.This reaction is a decomposition reaction and not a redox reaction. B.This reaction is a redox reaction in which the lead is reduced and the oxygen is oxidized. C.This reaction is a disproportionation reaction. D.This reaction is a redox reaction in which the nitrogen is reduced and the oxygen is oxidized.

18. 9.Determine the oxidation numbers for Cu in the superconductor YBa 2 Cu 3 O 7.Yttrium (Y) has an oxidation number of +3. (Cu does not have oxidation numbers greater than +3.) Give only integer oxidation numbers. Chapter 19 Standardized Test Preparation Short Answer

19. 9.Determine the oxidation numbers for Cu in the superconductor YBa 2 Cu 3 O 7.Yttrium (Y) has an oxidation number of +3. (Cu does not have oxidation numbers greater than +3.) Give only integer oxidation numbers. Answer: The oxidation numbers for Y, Ba, and O are +3, +2, and −2, respectively. Therefore, the sum of the oxidation numbers for the three Cu atoms must be +7. Two Cu atoms must have +2 oxidation states, and one Cu atom must have a +3 oxidation state. Chapter 19 Standardized Test Preparation Short Answer

20. 10.What is an oxidizing agent? Chapter 19 Standardized Test Preparation Short Answer

21. 10.What is an oxidizing agent? Answer: An oxidizing agent is a species that causes another species to be oxidized in a redox reaction. An oxidizing agent is therefore reduced in a redox reaction. Chapter 19 Standardized Test Preparation Short Answer

22. 11.B, F, K, and L are four unknown reducing agents that oxidize to singly charged cations. Using the following information, construct a table showing the relative strengths of the oxidizing and reducing agents. Data: F reduces K+, B+, and L+. B+ oxidizes K and F, but not L. Chapter 19 Standardized Test Preparation Extended Response

23. 11.B, F, K, and L are four unknown reducing agents that oxidize to singly charged cations. Using the following information, construct a table showing the relative strengths of the oxidizing and reducing agents. Data: F reduces K+, B+, and L+. B+ oxidizes K and F, but not L. Answer: Reducing agents Oxidizing agents FKBLFKBL F+ K+ B+ L+ Chapter 19 Standardized Test Preparation Extended Response

24. 12.Balance the equation for the following reaction in basic solution: Give the balanced equation for each half- reaction and for the overall reaction. Give the oxidizing agent and the reducing agent. Chapter 19 Standardized Test Preparation Extended Response

25. 12.Balance the equation for the following reaction in basic solution: Give the balanced equation for each half-reaction and for the overall reaction. Give the oxidizing agent and the reducing agent. Answer: Oxidation half-reaction: Reduction half-reaction: Overall reaction: This reaction is a disproportionation reaction; therefore, ClO 2 is both the reducing agent and the oxidizing agent. Chapter 19 Standardized Test Preparation Extended Response