ChE 501 Fall 2016 HW Assignment 5 Solution
1. Classify the following processes as either continuous, batch or semi-batch
An open tank full of water is heated until the water boils. The water continues to boil
until the water level has fallen three feet. T
ChE 501 Fall 2016 HW Assignment 15 Solution
1. Find the dew-point temperature at one atmosphere pressure of a vapor made up of 50
mol % toluene and benzene by a) the txy diagram and b) Roaults law and Antoines
equation.
Txy: 99 C
Antoines equation data fr
ChE 501 Fall 2016 HW Assignment 14 Solution
1. A stream of air is bubbled through liquid methyl chloride. It emerges from the unit
saturated with methyl chloride at 100 psia and 50 F. The stream is then sent to a heat
exchanger and heated to 70 F. Use the
ChE 501 Fall 2016 HW Assignment 16 Solution
1. Copper sulfate CuSO4 precipitates from aqueous solution as copper sulfate
pentahydrate CuSO4-5H20. Assume that the solubility limit of copper sulfate is 0.950 M
independent of temperature and that the specifi
f
it _10.0-L mol 273'2'K0399moz/min
F min l22.4-L305.6-K '
The mol fraction of the exiting gas stream is
*
=f=0092
P 760
The ow-rate of the exiting gas stream is ng, and the ow-rate of the exiting liquid stream
is m. The material balances are
Total 0.399
ChE 501 Fall 2016 HW Assignment 12 Solution, Due Wednesday, October 26
l. A reactor with a volume of 2.50 m3 is lled with catalyst particles (SG = 7.85). The
fraction of the volume taken up by the air space between the particles, called the void
action, i
ChE 501 Fall 2015 Practice Exam 4 Solution
1. A solution of 10 wt% xylocaine in water is fed to an extraction unit at a rate of 50 kg/min. An
organic solvent is also fed to the unit at a rate of 50 kg/min. The distribution coefficient for
xylocaine in the
ChE 501 Fall 2015 HW Assignment 18 Solution
1. Copper sulfate CuSO4 precipitates from aqueous solution as copper sulfate
pentahydrate CuSO4-5H2O. Assume that the solubility limit of copper sulfate is 0.950 M
independent of temperature and that the specifi
ChE 501 Fall 2012 HW Assignment 17 Solution
1. Find the dew-point temperature at one atmosphere pressure of a vapor made up of 50
mol % toluene and benzene by a) the t-xy diagram and b) Roaults law and Antoines
equation.
Txy: 99 oC
Antoines equation data
ChE 501 Fall 2016 HW Assignment 12 Solution, Due Wednesday, October 26
l. A reactor with a volume of 2.50 m3 is lled with catalyst particles (SG = 7.85). The
fraction of the volume taken up by the air space between the particles, called the void
action, i
ChE 501 Fall 2016 HW Assignment 13 Solution
equation-of-state to nd the volume ow-rate at 60.0 atrn and 40.0 C.
From Table 5.3-1 and Appendix B.1:
Carbon Dioxide a) = 0.225 T c = 304 - K PC = 72.9 - atm
z=3=1o3 P, ='60=0.823
304 72.9
Bo = 0.083 042i,
ChE 501 Fall 2016 HW Assignment 3 Solution
1. Find the volume in m3 of 52.6 lbm of iron.
m3
7700 - kg
kg
_ m _52.6-lbm
_ _ 220462-le
- 310~m3
p SGFexpw .
V=
2. A solution consists of 15.7 wt% cupric sulfate in water. Find the mol fraction of cupric
s
ChE 501 Fall 2016 HW Assignment 9 Solution
1. A reaction process is designed to produce methanol Mfrom methane, CH4, and
oxygen, 02. The possible reactions include the following.
CH4 + %02 => CH30H [1]
CH4 + 2202 3 C021 2H20 ~. [2]
CH30H + $02 :> C02 + 2H
ChE 501 Fan 2016 HW Assignment 8 Solution
1. A fuel cell takes oxygen (02) and methane (CH4) as feed. These compounds react to
form carbon dioxide (C02) and water (H20). The methane is fed at a rate of
100 mol/h, and the oxygen is to be fed in stoichiomet
ChE 501 Fall 2016 HW Assignment 6 Solution
1. A solution of 25.0 wt% Sodium Sulfate in water is to be added to a mixer with a
stream of pure water and diluted to 15.0 wt%. Find the required ow-rate of water.
Stream 1 Stream 3
m1 kglh m3 kg/h
0.35 kg
3%
ChE 501 Fall 2016 HW Assignment 10 Solution
1. The fresh feed to an ammonia synthesis plant is made up of a stoichiometric feed of
hydrogen and nitrogen. In addition, the fresh feed stream contains 1.00 mol% He, an inert
element. The feed is mixed with
ChE 501 Fall 2016 HW Assignment 2 Solution
In problems 1 and 2, use the following data.
_
1. Use twopoint linear interpolation to estimate Y for X = 4.50
(25.2 34.8)
Y =Y1 +M(x X1)=34.8+
(6.004.00)
4.504.00 = 32.4
(X2 X1) ( )
"' "W " 2:'Uselinear regres
2. An extraction-distillation process is used to remove a contaminant C from a stream of
water. The water, made up of 3.50 wt% C is fed to the extraction unit at a rate of 2.53 X
103 kg/h. A fresh feed of solvent S (50.0 kg/h) is mixed with a recycle stre
Manometer equation:
P1+P1id1+Pfih=P2+Pzid2
gc gc gc
Both uid 1 and uid 2 are air.
Phs = P0 + pf ih = 750+972 =1722-mmHg
g 0
Insert this result into the expression for the other manometer.
z + d2 760 - mmHg
10.33-mH20
750 - mmHg +1208 -mmHg = 1722 - mmH
295- mols - 02 - fed 3.76 - mols - N2
ChE 501 Fall 2016 HW Assignment 11 Solution
1. A hydrocarbon fuel made up of 55 mol % methane and 45 mol % ethane is burned
with 10 % excess air. Find the required feed rate of air and the ow rate and composition
of t
Nonane Balance: 65 = 50y + 50x
Antoines equation data from Table B.4:
nnonane A = 6.93764 B = 1430.459 C = 201.803 _
n-octane A = 6.91874 B = 1351.756 C = 209.100
Combining Raoults law and Antoines equation,
* * 6-93764- 6.91874135
P = xPn + (1x)Po = x 10
ChE 501 Fall 2015 HW Assignment 19 Solution
1. 100 kg/h of a mixture of 60.0 wt% acetone in water and 100 kg/h MIBK are fed to a
mixer. Find the flow rates and compositions of the streams leaving the mixer.
100 kg/h
0.60 kg A/kg
0.40 kg W/kg
1
3
2
4
m3 kg