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

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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 \(
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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