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3. Which of the following would you predict to have a higher standard molar entropy (Sº) value (in J/K)? Explain your logic. a. PF,(g) vs. PF3 (g) b. H₂S (g) vs.H₂O(g) c. NaCl(s) vs. NaCl (aq)

3. Which of the following would you predict to have a higher standard molar entropy (Sº) value (in J/K)? Explain your logic. a. PF,(g) vs. PF3 (g) b. H₂S (g) vs.H₂O(g) c. NaCl(s) vs. NaCl (aq)

Chemistry
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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11:07 < Back Assignment_2_202_NYB_F2023.docx or your zumdaní textboOK. b. Calculate the AH° using bond energies from Table 8.5 in the Zumdahl textbook. (Note that the C=O bond energy in CO₂ is 799 kJ/mol) c. Calculate the AG (in kJ/mol reaction), the AS surr (in J/K*mol reaction), the AS (in J/K*mol reaction) and the AS univ (in J/K*mol reaction) at 298K using Appendix 4 in the back of your Zumdahl textbook. (Different approaches can lead to modestly different answers.) 2C₂H6 (g) +70₂(g) à 4CO₂(g) + 6H₂O(g) 2. Predict the conditions (high temperatures, low temperatures, all temperatures, no temperature) under which the following reactions will be spontaneous. Justify your answer, writing the word "negative" or "positive" to indicate the sign next to both AS and AS surr in your justification. (Assume 1 atm external pressure) a. 2C₂H6 (g) + 70₂(g) à 4CO₂(g) + 6H₂O(g) b. HI(g) à H(g) + I(g) c. 2NO(g) + O₂(g) à 2NO₂(g) (Use table in Appendix 4, Zumdahl textbook) 3. Which of the following would you predict to have a higher standard molar entropy (Sº) value (in J/K)? Explain your logic. a. PF,(g) vs. PF₂ (g) b. H₂S (g) vs.H₂O(g) c. NaCl(s) vs. NaCl (aq) 4. For H₂O₂, the AH°, is 48.5 kJ/mol and the vap boiling point is 150.2°C at 1 atm. What is the change in entropy (in J/K*mol) during vaporization (AS° vap)?
Transcribed Image Text:11:07 < Back Assignment_2_202_NYB_F2023.docx or your zumdaní textboOK. b. Calculate the AH° using bond energies from Table 8.5 in the Zumdahl textbook. (Note that the C=O bond energy in CO₂ is 799 kJ/mol) c. Calculate the AG (in kJ/mol reaction), the AS surr (in J/K*mol reaction), the AS (in J/K*mol reaction) and the AS univ (in J/K*mol reaction) at 298K using Appendix 4 in the back of your Zumdahl textbook. (Different approaches can lead to modestly different answers.) 2C₂H6 (g) +70₂(g) à 4CO₂(g) + 6H₂O(g) 2. Predict the conditions (high temperatures, low temperatures, all temperatures, no temperature) under which the following reactions will be spontaneous. Justify your answer, writing the word "negative" or "positive" to indicate the sign next to both AS and AS surr in your justification. (Assume 1 atm external pressure) a. 2C₂H6 (g) + 70₂(g) à 4CO₂(g) + 6H₂O(g) b. HI(g) à H(g) + I(g) c. 2NO(g) + O₂(g) à 2NO₂(g) (Use table in Appendix 4, Zumdahl textbook) 3. Which of the following would you predict to have a higher standard molar entropy (Sº) value (in J/K)? Explain your logic. a. PF,(g) vs. PF₂ (g) b. H₂S (g) vs.H₂O(g) c. NaCl(s) vs. NaCl (aq) 4. For H₂O₂, the AH°, is 48.5 kJ/mol and the vap boiling point is 150.2°C at 1 atm. What is the change in entropy (in J/K*mol) during vaporization (AS° vap)?
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