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Consider the following data concerning an acetic acid/benzene mixture at 50 a C. The vapor pressure...
Consider the following data concerning an acetic acid/benzene mixture at 50 a C. The vapor pressure of pure benzene is 35.62 kPa at this temperature while pure acetic acid has a vapor pressure of 7.34 kPa. A 0.2973 mole fraction acetic acid solution is in equilibrium with a vapor that has a partial pressure of 28.16 kPa for benzene and 3.31 kPa for acetic acid.
What are the Raoult's law activity coefficients for solute and solvent in this system?
Is the heat of mixing in this system most likely zero, positive , or negative? Explain
If the partial pressure of solute is 0.484 kPa for a 0.0160 mole fraction acetic acid solution, what value for the Henry's law constant on the mole fraction scale would you predict for this solute in this solvent? You can assuming that the concentration of acetic acid is low enough that you are in the limiting law region.
Solutions
Amanda K answered 1 year agoRelated Solutions
At 87°C the vapor pressure of benzene is 931 torr and that of toluene is 290...
At 87°C the vapor pressure of benzene is 931 torr and that of
toluene is 290 torr. Which substance, benzene or toluene has the
higher normal boiling point? Is the normal boiling point of benzene
above or below 87°C? Is the normal boiling point of toluene above
or below 87°C? Explain how you arrived at your answers.
The vapor pressure of benzene is 73.03 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that...
The vapor pressure of benzene is
73.03 mm Hg at 25 °C. A nonvolatile,
nonelectrolyte that dissolves in benzene is
TNT.
Calculate the vapor pressure of the solution at 25 °C when
14.83 grams of TNT,
C7H5N3O6
(227.1 g/mol), are dissolved in
254.5 grams of benzene.
benzene =
C6H6 =
78.12 g/mol.
VP(solution) =-________mm Hg?
The vapor pressure of benzene is 73.03 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that...
The vapor pressure of benzene is
73.03 mm Hg at 25 °C. A nonvolatile,
nonelectrolyte that dissolves in benzene is
cholesterol.
Calculate the vapor pressure of the solution at 25 °C when
5.507 grams of cholesterol,
C27H46O
(386.6 g/mol), are dissolved in
205.6 grams of benzene.
benzene =
C6H6 =
78.12 g/mol.
VP(solution) = ____ mm Hg
A toluene solution is blended with 25% mass of benzene. The vapor pressure of benzene and...
A toluene solution is blended with 25% mass of benzene. The
vapor pressure of benzene and toluene at 25'C are 94.2 torr and
28.4 torr respectively. (a) Calculate the vapor pressure of each
component, (b) total pressure of the above solution, and (c) the
composition of the vapor in mass percent.
An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at 50 ∘C. The vapor...
An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at
50 ∘C. The vapor pressure of pure water at this temperature is 92.6
mmHg. Part A What is the concentration of CaCl2 in mass
percent?
An aqueous CaCl2 solution has a vapor pressure of 83.9 mmHg at 50 ∘C. The vapor...
An aqueous CaCl2 solution has a vapor pressure of 83.9 mmHg at
50 ∘C. The vapor pressure of pure water at this temperature is 92.6
mmHg. What is the concentration of CaCl2 in mass percent?
An aqueous sodium sulfide solution has a vapor pressure of 80.9mmHg at 50 ?C. The vapor...
An aqueous sodium sulfide solution has a vapor pressure of
80.9mmHg at 50 ?C. The vapor pressure of pure water at this
temperature is 92.6 mmHg. (Assume sodium sulfide completely
dissociates.)
What is the concentration of sodium sulfide in mass percent?
Please show all work.
Data for benzene and toluene are given below. Calculate the vapor pressure over a solution made...
Data for benzene and toluene are given below. Calculate the
vapor pressure over a solution made by mixing 20.0 grams of benzene
with 80.0 grams of toluene when the temperature is 40.0ºC.
Compound Molar
Mass
Vapor Pressure at 40.0ºC
Benzene
78.11
g/mol
183 mm Hg
Toluene
92.14
g/mol
59 mm Hg
Benzene and toluene form an ideal solution. At 25 oC, the vapor pressure of pure benzene...
Benzene and toluene form an ideal solution. At 25 oC, the vapor
pressure of pure benzene is 100 torr, and the vapor pressure of
pure toluene is 30.0 torr. A solution is prepared of 1.0 mol
benzene and 2.0 mol toluene. Some of the solution evaporates in a
closed system. What is the mole fraction of benzene in the
vapor?
A. 0.33
B. 0.43
C. 0.53
D. 0.63
E. 0.73
A mixture of benzene and toluene is in equilibrium with its vapor at 50oC. What mole...
A mixture of benzene and toluene is in equilibrium with its
vapor at 50oC. What mole fraction of benzene is in the vapor phase?
You may assume that this system follows Raoult's Law. Note: when
solving Antoine's equation it is best to keep all sig figs through
calculation and then truncate them at the end.
Question options: 0.687, 0.807, 0.572, 0.614, 0.746, 0.913
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