The vapor pressures of several solutions of water-propanol (CH 3 CH 2 CH 2 OH) were determined at various compositions, with the following data collected at 45°C: χ H 2 O Vapor pressure(torr) 0 74.0 0.15 77.3 0.37 80.2 0.54 81.6 0.69 80.6 0.83 78.2 1.00 71.9 a. Are solutions of water and propanol ideal? Explain. b. Predict the sign of ∆ H soln for water-propanol solutions. c. Are the interactive forces between propanol and water molecules weaker than, stronger than, or equal to the interactive forces between the pure substances? Explain. d. Which of the solutions in the data would have the lowest normal boiling point?
The vapor pressures of several solutions of water-propanol (CH 3 CH 2 CH 2 OH) were determined at various compositions, with the following data collected at 45°C: χ H 2 O Vapor pressure(torr) 0 74.0 0.15 77.3 0.37 80.2 0.54 81.6 0.69 80.6 0.83 78.2 1.00 71.9 a. Are solutions of water and propanol ideal? Explain. b. Predict the sign of ∆ H soln for water-propanol solutions. c. Are the interactive forces between propanol and water molecules weaker than, stronger than, or equal to the interactive forces between the pure substances? Explain. d. Which of the solutions in the data would have the lowest normal boiling point?
Solution Summary: The author explains that Raoult's law for ideal solution states that the mole tion of the solvent is directly proportional to the vapor pressure of a solution.
The vapor pressures of several solutions of water-propanol (CH3CH2CH2OH) were determined at various compositions, with the following data collected at 45°C:
χ
H
2
O
Vapor pressure(torr)
0
74.0
0.15
77.3
0.37
80.2
0.54
81.6
0.69
80.6
0.83
78.2
1.00
71.9
a. Are solutions of water and propanol ideal? Explain.
b. Predict the sign of ∆Hsoln for water-propanol solutions.
c. Are the interactive forces between propanol and water molecules weaker than, stronger than, or equal to the interactive forces between the pure substances? Explain.
d. Which of the solutions in the data would have the lowest normal boiling point?
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Curved arrows are used to illustrate the flow of electrons. Using
the provided starting and product structures, draw the curved
electron-pushing arrows for the following reaction or
mechanistic step(s).
Be sure to account for all bond-breaking and bond-making
steps.
:0:
0:0
H
NaO
Select to Add Arrows
CH3CH2CCNa
Problem 31 of 35
Please select a
K
Sepp aktiv com
Curved arrows are used to illustrate the flow of electrons. Using
the provided starting and product structures, draw the curved
electron-pushing arrows for the following reaction or
mechanistic step(s).
Be sure to account for all bond-breaking and bond-making
steps.
Drawing Arrows
CH3CH2OK, CH3CH2OH
Altis Learning App
31
Problem 28 of 35
H.
:0:
H
H
H
H
H
0:0
H
KO
Undo
Reset
Done
Q1: Draw the most stable and the least stable Newman projections about the C2-C3 bond for
each of the following isomers (A-C). Are the barriers to rotation identical for enantiomers A and
B? How about the diastereomers (A versus C or B versus C)?
enantiomers
H_ Br
(S) CH 3
H3C (S)
H Br
A
H Br
省
H3C (S) (R) CH₂
Br H
C
H Br
H3C (R)
B
(R)CH3
H Br
H Br
H3C (R)
(S) CH3
Br H
D
identical
Chapter 11 Solutions
Student Solutions Manual for Zumdahl/Zumdahl/DeCoste?s Chemistry, 10th Edition
Human Physiology: An Integrated Approach (8th Edition)
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