A gas mixture consisting of 10% ethylene gas (C2H4) and 90% CO2
by mol is combusted with 50% excess air via the following
unbalanced reaction: C2H4 (g) + O2 (g) à CO2 (g) + H2O (g) Air for
the reaction is brought in from outdoors and cooled through a
chiller to remove any humidity. The combustion product gas is
pressurized so that all water vapor is condensed into liquid, which
then combines with the water from the air chiller and...
A gas mixture consisting of 10% ethylene gas (C2H4) and 90% CO2
by mol is combusted with 50% excess air via the following
unbalanced reaction: C2H4 (g) + O2 (g) à CO2 (g) + H2O (g) Air for
the reaction is brought in from outdoors and cooled through a
chiller to remove any humidity. The combustion product gas is
pressurized so that all water vapor is condensed into liquid, which
then combines with the water from the air chiller and...
1. A mixture containing 2.81 g each of CH4 (g), C2H4 (g) and
C4H10 (g) is contained in a 1.50 L flask at a temperature of 35 oC.
What is the partial pressure (in atm) of C4H10 (g)?
2. A sample of gas contains 62.0 moles at 327 K in 4.00 L of
volume. What is the pressure (in atm) of the gas?
3. What is the molar mass of 572 mg of vapor in 0.500 L at 824
torr...
(a) A mixture containing 2.15 g each of
CH4(g), C2H4(g)
and C4H10(g) is contained in a 1.50
L flask at a temperature of 25°C.
Calculate the partial pressure of each of the gases in the
mixture.
PCH4
= ___ atm
PC2H4
= ___ atm
PC4H10
= ___ atm
Calculate the total pressure of the mixture.
___ atm
(b) A mixture of gases contains 1.06 g of N2, 2.22 g
of H2, and 1.22 g of NH3. If the total
pressure...
A gas mixture with a volumetric composition of 35% CO + 65% N2
is burned with fuel, 63% excess air. Fuel enters the furnace at 100
0C and air enters at 25 0C. Calculate the adiabatic (theoretical)
flame temperature.
A mixture containing 2.91 g each of CH4(g),
C2H4(g) and
C4H10(g) is contained in a 1.50 L
flask at a temperature of 35°C.
(a) Calculate the partial pressure of each of the gases in the
mixture.
PCH4
= ___ atm
PC2H4
= ___ atm
PC4H10
= ___ atm
(b) Calculate the total pressure of the mixture.
___ atm
A gas mixture A composed of 50% ethylene (C2H4) and 50% nitrogen
(N2) can be prepared by blending gas mixture B (20% ethylene and
80% nitrogen by volume) and C (100% ethylene).
If 43.3 L (@98.7 atm and 21.1C) of C is used to make mixture A,
how many moles of B are needed? How many moles of A can be
obtained?
N2: Tc = 126.2 K, pc = 33.9 bar
C2H4: Tc = 282.8 K, pc = 51.1 bar...
5. Natural gas is a mixture of hydrocarbons, primarily methane
(CH4) with a small amount of propane (C3H8). A sample of natural
gas in a 2.00 L container exerts a pressure of 0.950 atm at 35°C.
If there are 0.0020 moles of C3H8 present:
a. What is the partial pressure of C3H8 and CH4?
b. How many moles of CH4 are present?
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,...
A gas mixture containing water vapor has a dry basis molar
composition of 8.5% CO, 10.5% CO2,0.5% O2 and 80.5% N2. The gas s
at 620c and 1 atm with a dewpoint of 57c at a flow rate of
1270mol/h.The gas is cooled to 425C by spraying water at 20C into
the gas.Assume that the spray unit is adiabatic .calculat the
required water feed rate in kg /h.