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6. Which of the following elements is the oxidizing agent? a. Hydrogen b. Iron c. Both of them d. None of them 7. What is the oxidation number of phosphorus in HPO3? a. +3 b. -5 c. +1 d. +5 8. What is the oxidation number of phosphorus in H3PO₂? c. +1 a. +3 b. -5 d. +5 9. What is the oxidation number of the underlined atom in C₂04²-? a. -3 b. -5 c. +3 d. -1/2 10. What is the oxidation number of the underlined atom in NaBH₂? d. -1/2 a. -3 b. -5 c. +3

6. Which of the following elements is the oxidizing agent? a. Hydrogen b. Iron c. Both of them d. None of them 7. What is the oxidation number of phosphorus in HPO3? a. +3 b. -5 c. +1 d. +5 8. What is the oxidation number of phosphorus in H3PO₂? c. +1 a. +3 b. -5 d. +5 9. What is the oxidation number of the underlined atom in C₂04²-? a. -3 b. -5 c. +3 d. -1/2 10. What is the oxidation number of the underlined atom in NaBH₂? d. -1/2 a. -3 b. -5 c. +3

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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1. Which of the following statements is NOT TRUE? a. In redox reactions, electrons are transferred from one substance to another. b. Oxidation can occur without reduction occurring at the same time. c. Reducing agent donates electrons. d. Oxidizing agent accepts electrons. 2. Which of the following terms signifies the number of charges the atom would have in a molecule (or an ionic compound) if electrons were transferred completely? a. Redox reactions. b. Half reactions c. Oxidation number d. Oxidizing and reducing agents For numbers 3-6, consider the equation below. Fe(s) + 2H+(aq) Fe2+ (aq) + H₂(g) 3. Which of the following is the oxidation reaction? a. Fe(s) Fe2+ (aq) + 2e- b. 2H+(aq) + 2e Fe²+ (aq) c. Fe(s) H₂(g) d. 2H+ (aq) + 2e H₂(g) 4. Which of the following is the reduction reaction? a. Fe(s) Fe²+ (aq) 2e- b. 2H+ (aq) + 2e Fe²+ (aq) c. Fe(s) H₂(g) d. 2H+ (aq) + 2e- → H₂(g) 5. Which of the following is the reducing agent? a. Hydrogen b. Iron c. Both of them d. None of them 6. Which of the following elements is the oxidizing agent? a. Hydrogen b. Iron c. Both of them d. None of them 7. What is the oxidation number of phosphorus in HPO3? a. +3 b. -5 c. +1 d. +5 8. What is the oxidation number of phosphorus in H3PO₂? a. +3 b. -5 c. +1 d. +5 9. What is the oxidation number of the underlined atom in C₂04²-? a. -3 b. -5 10. What is the oxidation c. +3 d. -1/2 number of the underlined atom in NaBH4? c. +3 d. -1/2 a. -3 b. -5
Transcribed Image Text:1. Which of the following statements is NOT TRUE? a. In redox reactions, electrons are transferred from one substance to another. b. Oxidation can occur without reduction occurring at the same time. c. Reducing agent donates electrons. d. Oxidizing agent accepts electrons. 2. Which of the following terms signifies the number of charges the atom would have in a molecule (or an ionic compound) if electrons were transferred completely? a. Redox reactions. b. Half reactions c. Oxidation number d. Oxidizing and reducing agents For numbers 3-6, consider the equation below. Fe(s) + 2H+(aq) Fe2+ (aq) + H₂(g) 3. Which of the following is the oxidation reaction? a. Fe(s) Fe2+ (aq) + 2e- b. 2H+(aq) + 2e Fe²+ (aq) c. Fe(s) H₂(g) d. 2H+ (aq) + 2e H₂(g) 4. Which of the following is the reduction reaction? a. Fe(s) Fe²+ (aq) 2e- b. 2H+ (aq) + 2e Fe²+ (aq) c. Fe(s) H₂(g) d. 2H+ (aq) + 2e- → H₂(g) 5. Which of the following is the reducing agent? a. Hydrogen b. Iron c. Both of them d. None of them 6. Which of the following elements is the oxidizing agent? a. Hydrogen b. Iron c. Both of them d. None of them 7. What is the oxidation number of phosphorus in HPO3? a. +3 b. -5 c. +1 d. +5 8. What is the oxidation number of phosphorus in H3PO₂? a. +3 b. -5 c. +1 d. +5 9. What is the oxidation number of the underlined atom in C₂04²-? a. -3 b. -5 10. What is the oxidation c. +3 d. -1/2 number of the underlined atom in NaBH4? c. +3 d. -1/2 a. -3 b. -5
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