Liquid A has a vapor pressure of 200. torr at 25 °C and liquid B has a vapor pressure of 300. torr at 25 °C. Equal moles of these liquids are mixed at 25 °C, and the vapor pressure of the solution is measured to be 240. torr. What can be concluded from this measurement? A. A and B form an ideal solution. B. A-B attractions are stronger than A-A and B-B attractions. C. A-A and B-B attractions are stronger than A-B attractions. D. When A and B are mixed, AH> 0 (endothermic reaction). E. There is repulsion between molecules A and B.
Liquid A has a vapor pressure of 200. torr at 25 °C and liquid B has a vapor pressure of 300. torr at 25 °C. Equal moles of these liquids are mixed at 25 °C, and the vapor pressure of the solution is measured to be 240. torr. What can be concluded from this measurement? A. A and B form an ideal solution. B. A-B attractions are stronger than A-A and B-B attractions. C. A-A and B-B attractions are stronger than A-B attractions. D. When A and B are mixed, AH> 0 (endothermic reaction). E. There is repulsion between molecules A and B.
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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The answer is B, please explain, thanks.
Transcribed Image Text:8 Liquid A has a vapor pressure of 200. torr at 25 °C and liquid B has a vapor pressure of
300. torr at 25 °C. Equal moles of these liquids are mixed at 25 °C, and the vapor pressure of
the solution is measured to be 240. torr.
What can be concluded from this measurement?
A. A and B form an ideal solution.
B. A-B attractions are stronger than A-A and B-B attractions.
C. A-A and B-B attractions are stronger than A-B attractions.
D. When A and B are mixed, AH> 0 (endothermic reaction).
E. There is repulsion between molecules A and B.
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