Benzene [C6H6] and toluene [C7H8] form a solution
that is nearly ideal. At 30 ℃ the vapor...
Benzene [C6H6] and toluene [C7H8] form a solution
that is nearly ideal. At 30 ℃ the vapor pressure of an excess of
pure benzene is 120.2 mmHg and that of toluene is 36.7 mmHg.
a) What is the total pressure of a mixture containing 100 g of
each?
b) What is the percent of benzene in the mixed vapors?
A solution of benzene (C6H6) and toluene (C7H8) is 25.0 %
benzene by mass. The vapor pressures of pure benzene and pure
toluene at 25∘C are 94.2 and 28.4 torr, respectively.
1.)Assuming ideal behavior, calculate the vapor pressure of
benzene in the mixture.
Express the pressure to three significant figures and include
the appropriate units.
2.)Assuming ideal behavior, calculate the vapor pressure of
toluene in the mixture.
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
Benzene and toluene form nearly ideal solutions. The boiling
point of pure benzene is 80.1°C. Calculate the chemical potential
of benzene relative to that of pure benzene when xbenzene = 0.30 at
its boiling point. If the activity coefficient of benzene in this
solution were actually 0.93 rather than 1.00, what would be its
vapour pressure?
A solution consists of 3.88 g benzene,C6H6 , and 2.45 g toluene
,C6H5CH3. The vapor pressure of pure benzene at 20. °C is 75 mm Hg
and that of toluene at 20.0 °C is 22 mm Hg. Assume that Raoult’s
lawholds for each component of the solution, calculate the mole
fraction of benzene in the vapor. ( molar mass of benzene= 78.0
g/mole and toluene = 92.0 g/mole.)
Answer= 0.87
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.
assume that hexane and benzene mix to form an ideal solution.
the vapor pressure of hexane and benzene at 25C are 151.3 torr and
100.8 torr respectively. The total vapor pressure of the solution
is 130.1 torr at 25C. What is the mole fraction of benzene in the
solution and in the vapor?
4. A solution of benzene and toluene at 25C and 760mmHg has a
total vapor pressure (Ptotal) of 71.08 torr (mmHg). If
the partial pressures of benzene (Pbenzene) and toluene
(Ptoulene) are 60.86 torr and 122 torr respectively,
what are the percentages of a. benzene; and b. toluene, in
the corresponding vapor above the liquid. Please show all the
calculations.
(b) If the vapor pressure of pure benzene is always higher than
the vapor pressure of pure toluene when they...
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
A liquid is a mixture of benzene (C6H6) and toluene (C7H8). The
sample contains 20.309 grams of benzene and 114.254 grams of
toluene. At a given temperature, pure benzene has a vapor pressure
of 38.50 torr, while pure toluene has a vapor pressure of 8.99
torr. What is the total combined vapor pressure of the two liquids
(in torr)?
A mixture of benzene (C6H6), toluene (CH3C6H5) and methane (CH4)
was injected into a gas chromatograph column that is12.5 m long.
The peaks were observed at 40 s (methane), 260 s (benzene), and 272
s (toluene).
(a) Calculate the adjusted retention time (tS) and capacity
factor (k) for each solute.
(b) Find the relative retention () of toluene and benzene.
(c) If the width at the base (w) of the peaks for toluene and
benzene is 16 and 20 s,...