A solution of propanol (C3H7OH, Pº = 21.2 torr) and heptane (C7H16, Pº = 46.3 torr) in which the mole fraction of propanol is 0.900 has a total vapor pressure of 43.0 torr at 25.0 ºC. Which one of the following statements is completely true about this solution? Group of answer choices (a) The solution shows positive deviations from Raoult’s law and the total vapor pressure is 19.3 torr above the vapor pressure predicted by Raoult’s law. (b)The solution shows negative deviations from Raoult’s law and the total vapor pressure is 19.3 torr below the vapor pressure predicted by Raoult’s law. (c)The solution shows positive deviations from Raoult’s law and the total vapor pressure is 24.6 torr above the vapor pressure predicted by Raoult’s law (d) The solution shows negative deviations from Raoult’s law and the total vapor pressure is 3.4 torr below the vapor pressure predicted by Raoult’s law. (e) The solution shows negative deviations from Raoult’s law and the total vapor pressure is 24.6 torr below the vapor pressure predicted by Raoult’s law.
A solution of propanol (C3H7OH, Pº = 21.2 torr) and heptane (C7H16, Pº = 46.3 torr) in which the mole fraction of propanol is 0.900 has a total vapor pressure of 43.0 torr at 25.0 ºC. Which one of the following statements is completely true about this solution? Group of answer choices (a) The solution shows positive deviations from Raoult’s law and the total vapor pressure is 19.3 torr above the vapor pressure predicted by Raoult’s law. (b)The solution shows negative deviations from Raoult’s law and the total vapor pressure is 19.3 torr below the vapor pressure predicted by Raoult’s law. (c)The solution shows positive deviations from Raoult’s law and the total vapor pressure is 24.6 torr above the vapor pressure predicted by Raoult’s law (d) The solution shows negative deviations from Raoult’s law and the total vapor pressure is 3.4 torr below the vapor pressure predicted by Raoult’s law. (e) The solution shows negative deviations from Raoult’s law and the total vapor pressure is 24.6 torr below the vapor pressure predicted by Raoult’s law.
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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A solution of propanol (C3H7OH, Pº = 21.2 torr) and heptane (C7H16, Pº = 46.3 torr) in which the mole fraction of propanol is 0.900 has a total vapor pressure of 43.0 torr at 25.0 ºC. Which one of the following statements is completely true about this solution?
Group of answer choices
(a) The solution shows positive deviations from Raoult’s law and the total vapor pressure is 19.3 torr above the vapor pressure predicted by Raoult’s law.
(b)The solution shows negative deviations from Raoult’s law and the total vapor pressure is 19.3 torr below the vapor pressure predicted by Raoult’s law.
(c)The solution shows positive deviations from Raoult’s law and the total vapor pressure is 24.6 torr above the vapor pressure predicted by Raoult’s law
(d) The solution shows negative deviations from Raoult’s law and the total vapor pressure is 3.4 torr below the vapor pressure predicted by Raoult’s law.
(e) The solution shows negative deviations from Raoult’s law and the total vapor pressure is 24.6 torr below the vapor pressure predicted by Raoult’s law.
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