EBK INTRODUCTION TO CHEMICAL ENGINEERIN
8th Edition
ISBN: 9781259878091
Author: SMITH
Publisher: MCGRAW HILL BOOK COMPANY
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Textbook Question
Chapter 14, Problem 14.41P
The following problems involving chemical-reaction stoichiometry are to be solved through the use of reaction coordinates.
- Feed to a gas-phase reactor comprises 50 kmol+h-1 of species A, and 50 kmol+h-1 of species B. Two independent reactions occur:
A + B → C (I)
A + C → D (II)
Analysis of the gaseous effluent shows mole fractions ya= 0.05 and yB= 0.10.
- What is the reactor effluent rate in kmol+h-1 ?
- What are the mole fractions yC and yD in the effluent?
A + B → C (I)
A + 2B → D (II)
Analysis of the gaseous effluent shows mole fractions: yc = 0.52 and yD = 0.04. Determine the rates (kmol+h-1) of all species in the effluent stream.
A + B → D (II)
Reaction (I) produces valuable species C and coproduct B. The side reaction (II) produces by-product D. Analysis of the gaseous effluent shows mole fractions yc = 0.30 and YD= 0.10. Determine the rates (kmol+h-1) of all species in the effluent stream.
A + B → D + E (II)
Analysis of the gaseous effluent shows mole fractions yc = 0.25 and yD = 0.20. Determine:
- Rates in kmol+h-1 of all species in the effluent stream.
- Mole fractions of all species in the effluent stream.
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Ternary Phase Diagram+ Material balance
Feed mixture weighing 200 kg of unknown composition containing water, acetic acid, isopropyl ether is
contacted in a single stage with 280kg mixture containing 40wt% acetic acid. 10wt% water and 50wt% isopropyl
ether. The resulting raffinate layer weight 320 kg and containing 29.5 wt% acetic acid, 66.5 wt% water and 4wt%
isopropyl ether. Determine the composition of the original feed mixture and the extract layer
Water layer
Isopropyl ether layer
acetic acid
0
water
98.8
Isopropyl ether
1.2
acetic acid
0
water
Isopropyl ether
0.6
99.4
0.69
98.1
1.2
0.18
0.5
99.3
1.41
97.1
1.5
0.37
0.7
98.9
2.89
95.5
1.6
0.79
0.8
98.4
6.42
91.7
1.9
1.93
1
97.1
13.3
84.4
2.3
4.82
1.9
93.3
25.5
71.1
3.4
11.4
3.9
84.7
36.7
58.9
4.4
21.6
6.9
71.5
44.3
5.1
10.6
31.1
10.8
58.5
46.4
37.1
16.5
36.2
15.1
48.7
Graphically+Material balance
2500 kg/hr of (20-80) nicotine water solution is to be extracted with benzene containing 0.5% nicotine in
the 1st and 2nd stages while the 3rd stage is free of nicotine. Cross-current operation is used with different amounts
of solvent for each stages 2000kg/hr in the 1st stage, 2300 kg/hr in the 2nd stage, 2600 kg/hr in the 3rd,
determine:-
a- The final raffinate concentration and % extraction.
b- b-The minimum amount of solvent required for counter-current operation if the minimum concentration
will be reduced to 5% in the outlet raffinate.
Equilibrium data
Wt % Nicotine in water
0
4
16
25
Wt % Nicotine in benzene
0
4
21
30
Chapter 14 Solutions
EBK INTRODUCTION TO CHEMICAL ENGINEERIN
Ch. 14 - Prob. 14.1PCh. 14 - A system initially containing 2 mol C2H4 and 3 mol...Ch. 14 - A system formed initially of 2 mol CO2 , 5 mol H2...Ch. 14 - Consider the water-gas-shift reaction:...Ch. 14 - Rework Prob. 14.4 for a temperature of: (a) HOOK:...Ch. 14 - Use the method of equilibrium constants to verify...Ch. 14 - Prob. 14.7PCh. 14 - For ideal gases, exact mathematical expressions...Ch. 14 - For the ammonia synthesis reaction written:...Ch. 14 - Peter. Paul, and Mary, members of a thermodynamics...
Ch. 14 - The following reaction reaches equilibrium at...Ch. 14 - The following reaction reaches equilibrium at...Ch. 14 - The following reaction reaches equilibrium at...Ch. 14 - The following reaction, hydrogenation of styrene...Ch. 14 - The gas stream from a sulfur burner is composed of...Ch. 14 - Prob. 14.16PCh. 14 - Ethylene is produced by the dehydrogenation of...Ch. 14 - The production of 1,3-butadiene can be carried out...Ch. 14 - The production of 1,3-butadiene can be carried out...Ch. 14 - For the ammonia synthesis reaction, 12N2g+32H2NH3g...Ch. 14 - Prob. 14.21PCh. 14 - Prob. 14.22PCh. 14 - Ammonium chloride NH4Cls decomposes upon heating...Ch. 14 - A chemically reactive system contains the...Ch. 14 - The relative compositions of the pollutants NO and...Ch. 14 - Carbon black is produced by the decomposition of...Ch. 14 - Consider the reactions 12N2g+12O2gNOg12N2g+O2gNO2g...Ch. 14 - Oil refineries often have both H2S and SO2 to...Ch. 14 - Species N2O4 and NO2 as gases come to equilibrium...Ch. 14 - The following isomerization reaction occurs in the...Ch. 14 - Prob. 14.32PCh. 14 - The feed gas to a methanol synthesis reactor is...Ch. 14 - Prob. 14.34PCh. 14 - Consider the gas-phase isomerization reaction: ....Ch. 14 - A low-pressure, gas-phase isomerization reaction,...Ch. 14 - Set up the equations required for solution of Ex....Ch. 14 - Reaction-equilibrium calculations may be useful...Ch. 14 - Ethylene oxide as a vapor and water as liquid,...Ch. 14 - In chemical-reaction engineering, special measures...Ch. 14 - The following problems involving chemical-reaction...Ch. 14 - The following is an industrial-safety rule of...Ch. 14 - Prob. 14.43PCh. 14 - The standard heat of reaction A/f3 for gas-phase...Ch. 14 - Ethanol is produced from ethylene via the...Ch. 14 - A good source for formation data for compounds is...Ch. 14 - Reagent-grade, liquid-phase chemicals often...Ch. 14 - Cracking propane is a route to light olefin...Ch. 14 - Equilibrium at 425 K and 15 bar is established for...
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