1. The vapor pressure of pure water at 115°C is 1085 torr. A solution of ethylene glycol and water has a vapor pressure of 1.30 atm at the same temperature. What is the mole fraction of ethylene glycol in the solution?
1. The vapor pressure of pure water at 115°C is 1085 torr. A solution of ethylene glycol and water has a vapor pressure of 1.30 atm at the same temperature. What is the mole fraction of ethylene glycol in the solution?
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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NOTE: please base the value of boiling and freezing point, and Kb on the given table.
Transcribed Image Text:1. The vapor pressure of pure water at 115°C is 1085 torr. A
solution of ethylene glycol and water has a vapor pressure of
1.30 atm at the same temperature. What is the mole fraction of
ethylene glycol in the solution?
Transcribed Image Text:Table 13.6 Molal Boiling Point Elevation and Freezing Point
Depression Constants of Several Solvents
solvent
acetic acid
benzene
carbon disulfide
carbon tetrachloride
chloroform
diethyl ether
ethanol
water
*at 1 atm.
boiling
point (OC)*
117.9
80.1
46.2
76.5
61.7
34.5
78.5
100.0
Kb (oC/m)
3.07
2.53
2.34
5.03
3.63
2.02
1.22
0.512
melting
point (OC)
16.6
5.5
-111.5
-23
-63.5
-116.2
-117.3
0.0
Kf (oC/m)
3.90
4.90
3.83
30.
4.70
1.79
1.99
1.86
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