A solution is made by mixing 45.0 mL of ethanol, C̟H,0, and 55.0 mL of water. ASsuming ideal behavior, what is the vapor pressure of the solution at 20 °C? The relevant values at 20 °C are included in the table. Liquid Density (g/mL) Vapor Pressure, P° (Torr) ethanol 0.789 43.9 water 0.998 17.5 vapor pressure: To:
A solution is made by mixing 45.0 mL of ethanol, C̟H,0, and 55.0 mL of water. ASsuming ideal behavior, what is the vapor pressure of the solution at 20 °C? The relevant values at 20 °C are included in the table. Liquid Density (g/mL) Vapor Pressure, P° (Torr) ethanol 0.789 43.9 water 0.998 17.5 vapor pressure: To:
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter10: Properties Of Solutions
Section: Chapter Questions
Problem 61E: Which of the following will have the lowest total vapor pressure at 25C? a. pure water (vapor...
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Transcribed Image Text:A solution is made by mixing 45.0 mL of ethanol, C,H,0, and 55.0 mL of water. Assuming ideal behavior, what is the vapor
pressure of the solution at 20 °C? The relevant values at 20 °C are included in the table.
Liquid
Density (g/mL)
Vapor Pressure, P° (Torr)
ethanol
0.789
43.9
water
0.998
17.5
vapor pressure:
Torr
Expert Solution
Step 1
Volume of ethanol = 45 mL
Density of ethanol = 0.789 g/mL
Mass of ethanol = Volume * Density
= 45 mL * 0.789 g/mL
= 35.505 g
Moles of ethanol = Mass /Molar mass
= 35.505 g/46 g/mol
= 0.772 mol
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