each chemical reaction listed in the first column of the table below, predict the sign (positive or negative) of the reaction entropy ASxn. If it's not possible ecide with the information given, check the "not enough information" button in the last column. for advanced students: Assume the temperature remains constant. Assume all gases and solutions are ideal. Na Cl (s) reaction Na (aq) + Cl(aq) CaO(s) + CO,(g) → CaCO,(s) CaCl₂ (aq) + Na₂CO3(aq) sign of reaction entropy AS <0 rxn ΔS rxn > 0 Onot enough information. AS < 0 rxn AS > 0 rxn not enough information.. O AS < 0 rxn CaCO₂ (s) + 2NaCl(aq) ASxn > 0 O not enough information.

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For each chemical reaction listed in the first column of the table below, predict the sign (positive or negative) of the reaction entropy \( \Delta S_{\text{rxn}} \). If it's not possible to decide with the information given, check the "not enough information" button in the last column.

**Note for advanced students:** Assume the temperature remains constant. Assume all gases and solutions are ideal.

| reaction | sign of reaction entropy |
|----------|--------------------------|
| NaCl(s) → Na⁺(aq) + Cl⁻(aq) | ○ \( \Delta S_{\text{rxn}} < 0 \) <br> ○ \( \Delta S_{\text{rxn}} > 0 \) <br> ● not enough information. |
| CaO(s) + CO₂(g) → CaCO₃(s) | ○ \( \Delta S_{\text{rxn}} < 0 \) <br> ○ \( \Delta S_{\text{rxn}} > 0 \) <br> ● not enough information. |
| CaCl₂(aq) + Na₂CO₃(aq) → CaCO₃(s) + 2NaCl(aq) | ○ \( \Delta S_{\text{rxn}} < 0 \) <br> ○ \( \Delta S_{\text{rxn}} > 0 \) <br> ● not enough information. |

### Explanation:
- **NaCl(s) → Na⁺(aq) + Cl⁻(aq)**: The entropy change for dissolving a solid into ions in solution generally leads to an increase in disorder. However, without specific data, the entropy sign cannot be definitively assigned.
- **CaO(s) + CO₂(g) → CaCO₃(s)**: This reaction involves a decrease in the number of gas molecules, potentially suggesting a decrease in entropy. Again, specific data are needed for confirmation.
- **CaCl₂(aq) + Na₂CO₃(aq) → CaCO₃(s) + 2NaCl(aq)**: The formation of a solid from aqueous ions may indicate a decrease in entropy, yet the actual sign depends on precise thermodynamic data.
Transcribed Image Text:For each chemical reaction listed in the first column of the table below, predict the sign (positive or negative) of the reaction entropy \( \Delta S_{\text{rxn}} \). If it's not possible to decide with the information given, check the "not enough information" button in the last column. **Note for advanced students:** Assume the temperature remains constant. Assume all gases and solutions are ideal. | reaction | sign of reaction entropy | |----------|--------------------------| | NaCl(s) → Na⁺(aq) + Cl⁻(aq) | ○ \( \Delta S_{\text{rxn}} < 0 \) <br> ○ \( \Delta S_{\text{rxn}} > 0 \) <br> ● not enough information. | | CaO(s) + CO₂(g) → CaCO₃(s) | ○ \( \Delta S_{\text{rxn}} < 0 \) <br> ○ \( \Delta S_{\text{rxn}} > 0 \) <br> ● not enough information. | | CaCl₂(aq) + Na₂CO₃(aq) → CaCO₃(s) + 2NaCl(aq) | ○ \( \Delta S_{\text{rxn}} < 0 \) <br> ○ \( \Delta S_{\text{rxn}} > 0 \) <br> ● not enough information. | ### Explanation: - **NaCl(s) → Na⁺(aq) + Cl⁻(aq)**: The entropy change for dissolving a solid into ions in solution generally leads to an increase in disorder. However, without specific data, the entropy sign cannot be definitively assigned. - **CaO(s) + CO₂(g) → CaCO₃(s)**: This reaction involves a decrease in the number of gas molecules, potentially suggesting a decrease in entropy. Again, specific data are needed for confirmation. - **CaCl₂(aq) + Na₂CO₃(aq) → CaCO₃(s) + 2NaCl(aq)**: The formation of a solid from aqueous ions may indicate a decrease in entropy, yet the actual sign depends on precise thermodynamic data.
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