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Balance the following equation using the half-reaction method discussed in experiments 7 and 8. Pay careful attentior the condition of the reaction. 1. lisval ON +(HO)nɔ + _ON+nɔ b. Which element is reduced? SHOW the change in electrons. Which element is oxidized? SHOW the change in electrons.

Balance the following equation using the half-reaction method discussed in experiments 7 and 8. Pay careful attentior the condition of the reaction. 1. lisval ON +(HO)nɔ + _ON+nɔ b. Which element is reduced? SHOW the change in electrons. Which element is oxidized? SHOW the change in electrons.

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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--- ### Balancing Redox Reactions **Objective:** Learn to balance redox reactions using the half-reaction method. **Instructions:** 1. Balance the following equation using the **half-reaction method** discussed in experiments 7 and 8. Pay careful attention to the condition of the reaction: \[ \text{Cu} + \text{NO}_2^- \rightarrow \text{Cu(OH)}_2 + \text{NO} \ \text{[BASIC]} \] 2. Address the following questions: - **(a)** Which element is **reduced**? Show the change in electrons. - **(b)** Which element is **oxidized**? Show the change in electrons. **Explanation of the Half-Reaction Method:** When balancing redox reactions, the half-reaction method involves separating the oxidation reaction from the reduction reaction. Each half-reaction is balanced individually for mass and charge, and then the half-reactions are combined to give the overall balanced equation. **Step-by-Step Guide:** 1. **Separate the Two Half-Reactions:** - Identify the oxidation half-reaction. - Identify the reduction half-reaction. 2. **Balance Each Half-Reaction:** - Balance all elements except hydrogen and oxygen. - Balance oxygen atoms by adding H₂O. - Balance hydrogen atoms by adding H⁺ (in acidic solution) or OH⁻ (in basic solution). - Balance the charges by adding electrons (e⁻). 3. **Combine the Half-Reactions:** - Ensure the number of electrons lost in oxidation equals the number of electrons gained in reduction. - Add the half-reactions together and cancel out common species. By following these steps, you'll be able to balance complex redox reactions effectively. This will help in understanding the stoichiometry and electron transfer processes crucial in chemical reactions. ---
Transcribed Image Text:--- ### Balancing Redox Reactions **Objective:** Learn to balance redox reactions using the half-reaction method. **Instructions:** 1. Balance the following equation using the **half-reaction method** discussed in experiments 7 and 8. Pay careful attention to the condition of the reaction: \[ \text{Cu} + \text{NO}_2^- \rightarrow \text{Cu(OH)}_2 + \text{NO} \ \text{[BASIC]} \] 2. Address the following questions: - **(a)** Which element is **reduced**? Show the change in electrons. - **(b)** Which element is **oxidized**? Show the change in electrons. **Explanation of the Half-Reaction Method:** When balancing redox reactions, the half-reaction method involves separating the oxidation reaction from the reduction reaction. Each half-reaction is balanced individually for mass and charge, and then the half-reactions are combined to give the overall balanced equation. **Step-by-Step Guide:** 1. **Separate the Two Half-Reactions:** - Identify the oxidation half-reaction. - Identify the reduction half-reaction. 2. **Balance Each Half-Reaction:** - Balance all elements except hydrogen and oxygen. - Balance oxygen atoms by adding H₂O. - Balance hydrogen atoms by adding H⁺ (in acidic solution) or OH⁻ (in basic solution). - Balance the charges by adding electrons (e⁻). 3. **Combine the Half-Reactions:** - Ensure the number of electrons lost in oxidation equals the number of electrons gained in reduction. - Add the half-reactions together and cancel out common species. By following these steps, you'll be able to balance complex redox reactions effectively. This will help in understanding the stoichiometry and electron transfer processes crucial in chemical reactions. ---
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