Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy A.S. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction A B C observations This reaction is exothermic and proceeds faster at temperatures above -29. °C. The reverse of this reaction is always spontaneous. This reaction is spontaneous only below 140. °C. AH is AS is conclusions ΔΗ is AS is AH is AS is X (pick one) ✓ (pick one) ✓ (pick one) ✓ (pick one) ✓ (pick one) ✓ (pick one) ✓ olo Ar
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy A.S. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction A B C observations This reaction is exothermic and proceeds faster at temperatures above -29. °C. The reverse of this reaction is always spontaneous. This reaction is spontaneous only below 140. °C. AH is AS is conclusions ΔΗ is AS is AH is AS is X (pick one) ✓ (pick one) ✓ (pick one) ✓ (pick one) ✓ (pick one) ✓ (pick one) ✓ olo Ar
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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The three options are: positive, negative, or unknown
![### Chemical Reaction Analysis for Enthalpy and Entropy
#### Introduction
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy (\(\Delta H\)) and reaction entropy (\(\Delta S\)).
**Note:** If you have not been given enough information to decide a sign, select the "unknown" option.
#### Observations and Conclusions Table
| **Reaction** | **Observations** | **Conclusions** |
|--------------|------------------|-----------------|
| **A** | This reaction is exothermic and proceeds faster at temperatures above \( -29 \degree \mathrm{C}\). | \(\Delta H\) is [Drop-down Selection]<br>\(\Delta S\) is [Drop-down Selection] |
| **B** | The reverse of this reaction is always spontaneous. | \(\Delta H\) is [Drop-down Selection]<br>\(\Delta S\) is [Drop-down Selection] |
| **C** | This reaction is spontaneous only below \( 140 \degree \mathrm{C}\). | \(\Delta H\) is [Drop-down Selection]<br>\(\Delta S\) is [Drop-down Selection] |
#### Drop-down Selections
- Positive
- Negative
- Unknown
### Detailed Breakdown of the Observations:
#### Reaction A
- **Observation:** This reaction is exothermic and proceeds faster at temperatures above \(-29 \degree \mathrm{C}\).
- **Interpreted Conclusion:**
- \(\Delta H\) is likely **negative** due to the exothermic nature.
- \(\Delta S\) could be **positive**, as the reaction speeds up, suggesting increased disorder, or it might be **unknown** without more details.
#### Reaction B
- **Observation:** The reverse of this reaction is always spontaneous.
- **Interpreted Conclusion:**
- \(\Delta H\) is likely **positive** for the forward reaction since the reverse reaction is spontaneous (which implies negative \(\Delta H\) for the reverse and thus positive for the forward).
- \(\Delta S\) is likely **negative** since a reverse spontaneous reaction indicates increased order, making the forward process more ordered as well or it might be **unknown** without more details.
#### Reaction C
- **Observation:** This reaction is spontaneous only below \(](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fffa72a4c-ccb8-45dd-a189-a93d0336c585%2F5353c8a0-d821-41e0-bf33-19f541d33482%2Fbe7nyin_processed.png&w=3840&q=75)
Transcribed Image Text:### Chemical Reaction Analysis for Enthalpy and Entropy
#### Introduction
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy (\(\Delta H\)) and reaction entropy (\(\Delta S\)).
**Note:** If you have not been given enough information to decide a sign, select the "unknown" option.
#### Observations and Conclusions Table
| **Reaction** | **Observations** | **Conclusions** |
|--------------|------------------|-----------------|
| **A** | This reaction is exothermic and proceeds faster at temperatures above \( -29 \degree \mathrm{C}\). | \(\Delta H\) is [Drop-down Selection]<br>\(\Delta S\) is [Drop-down Selection] |
| **B** | The reverse of this reaction is always spontaneous. | \(\Delta H\) is [Drop-down Selection]<br>\(\Delta S\) is [Drop-down Selection] |
| **C** | This reaction is spontaneous only below \( 140 \degree \mathrm{C}\). | \(\Delta H\) is [Drop-down Selection]<br>\(\Delta S\) is [Drop-down Selection] |
#### Drop-down Selections
- Positive
- Negative
- Unknown
### Detailed Breakdown of the Observations:
#### Reaction A
- **Observation:** This reaction is exothermic and proceeds faster at temperatures above \(-29 \degree \mathrm{C}\).
- **Interpreted Conclusion:**
- \(\Delta H\) is likely **negative** due to the exothermic nature.
- \(\Delta S\) could be **positive**, as the reaction speeds up, suggesting increased disorder, or it might be **unknown** without more details.
#### Reaction B
- **Observation:** The reverse of this reaction is always spontaneous.
- **Interpreted Conclusion:**
- \(\Delta H\) is likely **positive** for the forward reaction since the reverse reaction is spontaneous (which implies negative \(\Delta H\) for the reverse and thus positive for the forward).
- \(\Delta S\) is likely **negative** since a reverse spontaneous reaction indicates increased order, making the forward process more ordered as well or it might be **unknown** without more details.
#### Reaction C
- **Observation:** This reaction is spontaneous only below \(
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