ep 1. H₂O₂ +J H₂O + 10 slow ep 2. 10 + H₂Qz H₂O + 0₂ + I fast The reaction coordinate diagram for this mechanism is show below. 70 60 40 30 10 Progress of the Reaction What is the AH for the reverse reaction? 50 kJ/mol/30 kJ/mol/none of the answers are correct/20 kJ/mol/-20 kJ/mol Potential Energy (kJ/mol)
ep 1. H₂O₂ +J H₂O + 10 slow ep 2. 10 + H₂Qz H₂O + 0₂ + I fast The reaction coordinate diagram for this mechanism is show below. 70 60 40 30 10 Progress of the Reaction What is the AH for the reverse reaction? 50 kJ/mol/30 kJ/mol/none of the answers are correct/20 kJ/mol/-20 kJ/mol Potential Energy (kJ/mol)
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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![### Considering the Reaction Mechanism Shown Below
#### Mechanism Steps:
**Step 1**:
\[ \text{H}_2\text{O}_2 + \text{I}^- \rightarrow \text{H}_2\text{O} + \text{IO}^- \] *(slow)*
**Step 2**:
\[ \text{IO}^- + \text{H}_2\text{O}_2 \rightarrow \text{H}_2\text{O} + \text{O}_2 + \text{I}^- \] *(fast)*
#### Explanation:
The reaction mechanism involves two steps.
1. In the first step, hydrogen peroxide (H₂O₂) reacts with iodide (I⁻) to form water (H₂O) and hypoiodite (IO⁻). This step is slow and is considered the rate-determining step.
2. In the second step, hypoiodite (IO⁻) further reacts with another molecule of hydrogen peroxide to form water, oxygen (O₂), and regenerate the iodide (I⁻) ion. This step proceeds fast.
### Reaction Coordinate Diagram:
Below the reaction mechanism, a reaction coordinate diagram illustrates the potential energy changes throughout the reaction progress.
#### Description of the Graph:
- **X-Axis**: Progress of the Reaction
- **Y-Axis**: Potential Energy (kJ/mol)
- The graph starts at a lower energy level and ascends to a peak around 40 kJ/mol, indicating the activation energy for the first step.
- It then drops to around 30 kJ/mol, showing the formation of an intermediate.
- A second peak at approximately 70 kJ/mol represents the activation energy for the second step.
- Finally, the potential energy decreases drastically to just above 10 kJ/mol as the reaction reaches completion.
### Question:
What is the \( \Delta H \) for the reverse reaction?
### Options:
- 50 kJ/mol
- 30 kJ/mol
- None of the answers are correct
- 20 kJ/mol
- -20 kJ/mol](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F86c8257a-dc3e-47de-95a9-16e2950b2196%2Fbdea577a-db8d-4295-a947-8366bc9eb945%2F4k3wm2_processed.png&w=3840&q=75)
Transcribed Image Text:### Considering the Reaction Mechanism Shown Below
#### Mechanism Steps:
**Step 1**:
\[ \text{H}_2\text{O}_2 + \text{I}^- \rightarrow \text{H}_2\text{O} + \text{IO}^- \] *(slow)*
**Step 2**:
\[ \text{IO}^- + \text{H}_2\text{O}_2 \rightarrow \text{H}_2\text{O} + \text{O}_2 + \text{I}^- \] *(fast)*
#### Explanation:
The reaction mechanism involves two steps.
1. In the first step, hydrogen peroxide (H₂O₂) reacts with iodide (I⁻) to form water (H₂O) and hypoiodite (IO⁻). This step is slow and is considered the rate-determining step.
2. In the second step, hypoiodite (IO⁻) further reacts with another molecule of hydrogen peroxide to form water, oxygen (O₂), and regenerate the iodide (I⁻) ion. This step proceeds fast.
### Reaction Coordinate Diagram:
Below the reaction mechanism, a reaction coordinate diagram illustrates the potential energy changes throughout the reaction progress.
#### Description of the Graph:
- **X-Axis**: Progress of the Reaction
- **Y-Axis**: Potential Energy (kJ/mol)
- The graph starts at a lower energy level and ascends to a peak around 40 kJ/mol, indicating the activation energy for the first step.
- It then drops to around 30 kJ/mol, showing the formation of an intermediate.
- A second peak at approximately 70 kJ/mol represents the activation energy for the second step.
- Finally, the potential energy decreases drastically to just above 10 kJ/mol as the reaction reaches completion.
### Question:
What is the \( \Delta H \) for the reverse reaction?
### Options:
- 50 kJ/mol
- 30 kJ/mol
- None of the answers are correct
- 20 kJ/mol
- -20 kJ/mol
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