O not be suitable because ASuniv > 0.

Chemistry
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Chapter1: Chemical Foundations
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### Solvent Suitability for an Experiment

A particular solvent with the following properties is being considered for use in an experiment:
- Entropy of vaporization (\(\Delta S^\circ_{\text{vap}}\)) = 112.9 J/(K·mol)
- Enthalpy of vaporization (\(\Delta H^\circ_{\text{vap}}\)) = 38.0 kJ/mol

**Experiment Conditions:**
- Temperature = 75°C
- Requirement: The solvent must not boil during the experiment.

**Question:**
Based on the overall entropy change associated with the vaporization reaction, would this solvent be suitable, and why or why not?

**Answer Choices:**

- The solvent would be suitable because \(\Delta S_{\text{univ}} > 0\).
- The solvent would not be suitable because \(\Delta S_{\text{univ}} > 0\).
- The solvent would be suitable because \(\Delta S_{\text{univ}} < 0\).
- The solvent would not be suitable because \(\Delta S_{\text{univ}} < 0\).

**Note:**
To determine the suitability of the solvent based on the entropy change, consider the expression for the change in the entropy of the universe (\(\Delta S_{\text{univ}}\)), which combines changes in both the system and the surroundings. The outcome of the reaction will depend on whether this value is positive or negative under the given conditions.
Transcribed Image Text:### Solvent Suitability for an Experiment A particular solvent with the following properties is being considered for use in an experiment: - Entropy of vaporization (\(\Delta S^\circ_{\text{vap}}\)) = 112.9 J/(K·mol) - Enthalpy of vaporization (\(\Delta H^\circ_{\text{vap}}\)) = 38.0 kJ/mol **Experiment Conditions:** - Temperature = 75°C - Requirement: The solvent must not boil during the experiment. **Question:** Based on the overall entropy change associated with the vaporization reaction, would this solvent be suitable, and why or why not? **Answer Choices:** - The solvent would be suitable because \(\Delta S_{\text{univ}} > 0\). - The solvent would not be suitable because \(\Delta S_{\text{univ}} > 0\). - The solvent would be suitable because \(\Delta S_{\text{univ}} < 0\). - The solvent would not be suitable because \(\Delta S_{\text{univ}} < 0\). **Note:** To determine the suitability of the solvent based on the entropy change, consider the expression for the change in the entropy of the universe (\(\Delta S_{\text{univ}}\)), which combines changes in both the system and the surroundings. The outcome of the reaction will depend on whether this value is positive or negative under the given conditions.
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