A solution is made by mixing 50.0 g of acetone (CH3COCH3) and 50.0 g of methanol (CH3OH). What is the vapor pressure of this solution at 258C? What is the composition of the vapor expressed as a mole fraction? Assume ideal solution and gas behavior. (At 258C the vapor pressures of pure acetone and pure methanol are 271 and 143 torr, respectively.) The actual vapor pressure of this solution is 161 torr. Explain any discrepancies.
A solution is made by mixing 50.0 g of acetone (CH3COCH3) and 50.0 g of methanol (CH3OH). What is the vapor pressure of this solution at 258C? What is the composition of the vapor expressed as a mole fraction? Assume ideal solution and gas behavior. (At 258C the vapor pressures of pure acetone and pure methanol are 271 and 143 torr, respectively.) The actual vapor pressure of this solution is 161 torr. Explain any discrepancies.
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter11: Solutions And Colloids
Section: Chapter Questions
Problem 65E: The vapor pressure of methanol, CH3OH, is 94 torr at 20 C. The vapor pressure of ethanol, C2H5OH, is...
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Question
A solution is made by mixing 50.0 g of acetone
(CH3COCH3) and 50.0 g of methanol (CH3OH). What
is the vapor pressure of this solution at 258C? What is
the composition of the vapor expressed as a mole fraction? Assume ideal solution and gas behavior. (At
258C the vapor pressures of pure acetone and pure
methanol are 271 and 143 torr, respectively.) The actual vapor pressure of this solution is 161 torr. Explain
any discrepancies.
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