Balance the following redox reaction in acidic solution: MnO4 (aq) + Fe (s) Mn2* (aq) + Fe3+ ---> What is the stoichiometric coefficient of water in the balanced reaction?

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...
icon
Related questions
icon
Concept explainers
Question

Need help with this following question

### Balancing Redox Reactions in Acidic Solutions

**Problem Statement:**

Balance the following redox reaction in acidic solution:

\[ \text{MnO}_4^- \, (\text{aq}) + \text{Fe} \, (\text{s}) \rightarrow \text{Mn}^{2+} \, (\text{aq}) + \text{Fe}^{3+} \]

**Question:**

What is the stoichiometric coefficient of water in the balanced reaction?

**Answer Options:**

- 6
- 5
- 3
- 12
- 10

### Explanation:

To solve this problem, you need to perform the following steps:

1. **Identify the Oxidation and Reduction Half-Reactions:**
   - The half-reaction involving a change in manganese (Mn) from \(\text{MnO}_4^-\) to \(\text{Mn}^{2+}\).
   - The half-reaction involving a change in iron (Fe) from \(\text{Fe}\) to \(\text{Fe}^{3+}\).

2. **Balance Each Half-Reaction Separately:**
   - Balance the atoms other than O and H.
   - Balance oxygen atoms by adding \(\text{H}_2\text{O}\).
   - Balance hydrogen atoms by adding \(\text{H}^+\).
   - Balance the charge by adding electrons.

3. **Combine the Half-Reactions:**
   - Ensure the number of electrons lost in oxidation equals the number of electrons gained in reduction.
   - Combine and simplify to achieve the final balanced equation.

4. **Determine the Coefficient of Water (\(\text{H}_2\text{O}\)):**
   - Identify the total number of water molecules on the product or reactant side in the balanced equation.

In this question, you need to find the stoichiometric coefficient for water to complete the balance of the reaction in an acidic solution.
Transcribed Image Text:### Balancing Redox Reactions in Acidic Solutions **Problem Statement:** Balance the following redox reaction in acidic solution: \[ \text{MnO}_4^- \, (\text{aq}) + \text{Fe} \, (\text{s}) \rightarrow \text{Mn}^{2+} \, (\text{aq}) + \text{Fe}^{3+} \] **Question:** What is the stoichiometric coefficient of water in the balanced reaction? **Answer Options:** - 6 - 5 - 3 - 12 - 10 ### Explanation: To solve this problem, you need to perform the following steps: 1. **Identify the Oxidation and Reduction Half-Reactions:** - The half-reaction involving a change in manganese (Mn) from \(\text{MnO}_4^-\) to \(\text{Mn}^{2+}\). - The half-reaction involving a change in iron (Fe) from \(\text{Fe}\) to \(\text{Fe}^{3+}\). 2. **Balance Each Half-Reaction Separately:** - Balance the atoms other than O and H. - Balance oxygen atoms by adding \(\text{H}_2\text{O}\). - Balance hydrogen atoms by adding \(\text{H}^+\). - Balance the charge by adding electrons. 3. **Combine the Half-Reactions:** - Ensure the number of electrons lost in oxidation equals the number of electrons gained in reduction. - Combine and simplify to achieve the final balanced equation. 4. **Determine the Coefficient of Water (\(\text{H}_2\text{O}\)):** - Identify the total number of water molecules on the product or reactant side in the balanced equation. In this question, you need to find the stoichiometric coefficient for water to complete the balance of the reaction in an acidic solution.
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Ionic Equilibrium
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY