Compute the vapor pressure of an ideal solution containing 92.1 g of glycerin, C3H5(OH)3, and 184.4 g of ethanol, C2H5OH, at 40 °C. The vapor pressure of pure ethanol is 0.178 atm at 40 °C. Glycerin is essentially nonvolatile at this temperature.

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Instruction: solve as neatly as possible and show complete solution. Round your final answer to 4 decimal places and box / highlight all final answers. and all values must include proper units with proper conversion if needed in your solution.

 

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Vapor Pressure Lowering
Vapor pressure is the pressure exerted by a vapor
that is in dynamic equilibrium with its liquid in a closed
system.
A solution that contains a solute that is nonvolatile (not
easily vaporized) always has a lower vapor pressure than
the pure solvent.
The vapor pressure of an ideal solution is described by
Raoult's law. Each component in a solution exerts a
pressure that is equal to its mole fraction times the vapor
pressure of the pure component.
PA = X4 x P.
PA – vapor pressure exerted by component A in the solution
XẠ – mole fraction of component A
PÅ – vapor pressure of the pure substance A
Transcribed Image Text:Vapor Pressure Lowering Vapor pressure is the pressure exerted by a vapor that is in dynamic equilibrium with its liquid in a closed system. A solution that contains a solute that is nonvolatile (not easily vaporized) always has a lower vapor pressure than the pure solvent. The vapor pressure of an ideal solution is described by Raoult's law. Each component in a solution exerts a pressure that is equal to its mole fraction times the vapor pressure of the pure component. PA = X4 x P. PA – vapor pressure exerted by component A in the solution XẠ – mole fraction of component A PÅ – vapor pressure of the pure substance A
7. Compute the vapor pressure
C3H5(OH)3, and 184.4 g of ethanol, C2H5OH, at 40 °C. The vapor pressure of
pure ethanol is 0.178 atm at 40 °C. Glycerin is essentially nonvolatile at this
temperature.
an ideal solution containing 92.1 g of glycerin,
Transcribed Image Text:7. Compute the vapor pressure C3H5(OH)3, and 184.4 g of ethanol, C2H5OH, at 40 °C. The vapor pressure of pure ethanol is 0.178 atm at 40 °C. Glycerin is essentially nonvolatile at this temperature. an ideal solution containing 92.1 g of glycerin,
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