(a) Calculate the vapor pressure at 45°C for a solution that contains 46.0% of propanol and 54.0% water, by mole, assuming an ideal solution. (b) Determine whether water and propanol form an ideal solution, non-ideal solution with positive deviation, or non-ideal solution with negative deviation. (c) Are the overall intermolecular forces in the mixture stronger or weaker than those in pure liquid combined? Explain. (d) Which liquid has a higher boiling point, water or propanol? Explain. (e) For the three mixtures shown in the table, which one is expected to have the lowest boiling point? Explain.
(a) Calculate the vapor pressure at 45°C for a solution that contains 46.0% of propanol and 54.0% water, by mole, assuming an ideal solution. (b) Determine whether water and propanol form an ideal solution, non-ideal solution with positive deviation, or non-ideal solution with negative deviation. (c) Are the overall intermolecular forces in the mixture stronger or weaker than those in pure liquid combined? Explain. (d) Which liquid has a higher boiling point, water or propanol? Explain. (e) For the three mixtures shown in the table, which one is expected to have the lowest boiling point? Explain.
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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Transcribed Image Text:The vapor pressure of several solutions of water-propanol (C;H;OH) were determined at various
compositions, and the following data of vapor pressure were collected at 45°C.
6.
Mole fraction of H;0
XH20.
Vapor Pressure of Solution
(torr)
74.0
0.37
80.2
0.54
81.6
0.69
80.6
1.00
72.0
(a) Calculate the vapor pressure at 45°C for a solution that contains 46.0% of propanol and 54.0%
water, by mole, assuming an ideal solution.
(b) Determine whether water and propanol form an ideal solution, non-ideal solution with positive
deviation, or non-ideal solution with negative deviation.
(c) Are the overall intermolecular forces in the mixture stronger or weaker than those in pure liquids
combined? Explain.
(d) Which liquid has a higher boiling point, water or propanol? Explain.
(e) For the three mixtures shown in the table, which one is expected to have the lowest boiling
point? Explain.
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