Chemistry: An Atoms First Approach
2nd Edition
ISBN: 9781305079243
Author: Steven S. Zumdahl, Susan A. Zumdahl
Publisher: Cengage Learning
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Textbook Question
Chapter 10, Problem 64E
The vapor pressures of several solutions of water-propanol (CH3CH2CH2OH) were determined at various compositions, with the following data collected at 45°C:
|
Vapor pressure(torr) |
0 | 74.0 |
0.15 | 77.3 |
0.37 | 80.2 |
0.54 | 81.6 |
0.69 | 80.6 |
0.83 | 78.2 |
1.00 | 71.9 |
a. Are solutions of water and propanol ideal? Explain.
b. Predict the sign of ∆Hsoln for water-propanol solutions.
c. Are the interactive forces between propanol and water molecules weaker than, stronger than, or equal to the interactive forces between the pure substances? Explain.
d. Which of the solutions in the data would have the lowest normal boiling point?
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Chemistry: An Atoms First Approach
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY