A solution is made by dissolving 0.500 mol of nonelectrolyte solute in 769 g of benzene. Calculate the freezing point, Tf, and boiling point, Th, of the solution. Constants can be found in the table of colligative constants. T = °C T = °C
A solution is made by dissolving 0.500 mol of nonelectrolyte solute in 769 g of benzene. Calculate the freezing point, Tf, and boiling point, Th, of the solution. Constants can be found in the table of colligative constants. T = °C T = °C
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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Transcribed Image Text:A solution is made by dissolving 0.500 mol of nonelectrolyte solute in 769 g of benzene. Calculate the freezing point, Tf,
and boiling point, Th, of the solution. Constants can be found in the table of colligative constants.
T =
°C
T =
°C
Transcribed Image Text:Colligative Constants
Q
a macmillan
learning
Chempendix
Constants for freezing-point depression and boiling-point elevation calculations at 1 atm:
Kf value* Normal freezing K, value Normal boiling
(°C/ m)
Physical Constants
Solvent
Formula
(°C/ m)
point ( °C)
point ( °C)
H20
C 6H 6
cyclohexane C 6 H 12
C2H60
water
1.86
0.00
0.512
100.00
Acids and Bases
benzene
5.12
5.49
2.53
80.1
Activity Coefficients
20.8
6.59
2.92
80.7
ethanol
1.99
–117.3
1.22
78.4
Activity Series
carbon
CCI 4
29.8
-22.9
5.03
76.8
tetrachloride
Amino Acids
camphor
C 10 H 16 O 37.8
176
Boiling Points
Bond Energies
Bond Lengths
*When using positive Kf values, assume that ATf is the absolute value of the change in temperature. If you would prefer to define ATfas "final minus initial"
temperature, then ATf will be negative and so you must use negative K¢ values. Either way, the freezing point of the solution should be lower than that of
Codons
the pure solvent.
Colligative Constants
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