Elementary Principles of Chemical Processes, Binder Ready Version
4th Edition
ISBN: 9781118431221
Author: Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher: WILEY
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Question
Chapter 7, Problem 7.53P
Interpretation Introduction
(a)
Interpretation:
Calculate the pressure of the cylinder content and determine whether heat is enough to vaporize any of water.
Concept introduction:
The pressure of the system will be equal to the force (F) per area (A) on the piston plus the atmospheric pressure as given by the following equation.
P=(FA)piston+Patm
Interpretation Introduction
(b)
Interpretation:
Estimate the final system temperature, the volumes of the liquid and vapor phases present at equilibrium and the vertical distance travelled by the piston.
Concept introduction:
The pressure of the system will be equal to the force (F) per area (A) on the piston plus the atmospheric pressure as given by the following equation.
P=(FA)piston+Patm
Interpretation Introduction
(c)
Interpretation:
Calculate the upper limit on the temperature and state the condition of the bar.
Concept introduction:
The pressure of the system will be equal to the force (F) per area (A) on the piston plus the atmospheric pressure as given by the following equation.
P=(FA)piston+Patm
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Homework 8
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Question 3 of 5
Entering Steam
>
>
Check table lookups for correct values.
Check significant figures.
Check unit conversions.
Calculate the required flow rate of the entering steam in m³/min.
0.00132
m³/min
eTextbook and Media
Hint
0/1
Assistance Used
Determine the specific enthalpy change of each stream first. Then use the known flow rate of the methanol to calculate the
steam flow rate.
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Heat Transferred
× Check units and significant figures.
Calculate the rate of heat transfer from the water to the methanol (kW).
i 44.5
kW
Hint
Don't forget to convert minutes to seconds.
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← Homework 8
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A liquid mixture of benzene and toluene containing 52.0 wt% benzene at 100.0 °C and pressure Po atm is fed at a rate of 32.5 m³/h into
a heated flash tank maintained at a pressure Ptank
Material Balances
Correct.
0.67/1
===
Attempts: 1 of 5 used
Calculate Ptank (atm), the mole fraction of benzene in the vapor, and the molar flow rates of the liquid and vapor products.
Ptank
.544
atm
Ybz
.657
mol benzene/mol vapor product
nvapor
55.8
mol/s
nliquid
37.6
mol/s
Hint
GO Tutorial
Energy Balance
Check heat capacities.
Calculate the required heat input rate in kilowatts. i
0.447
kW
Hint
GO Tutorial
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Attempts: 2 of 5 used
Assistance Used
Attempts: 1 of 5 used
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Homework 8
A stream of pure cyclopentane vapor flowing at a rate of 1650 L/s at 190.0°C and 1 atm enters a cooler in which 50.0% of the feed is
condensed at constant pressure.
Question 4 of 5
Correct
What is the temperature at the condenser outlet?
49.3
°℃
eTextbook and Media
Hint
Enthalpy Table
Your Answer Correct Answer (Used)
0.67/1
E
Attempts: 1 of 5 used
Prepare and fill in an inlet-outlet enthalpy table. Use a reference state of liquid cyclopentane at the boiling point.
In
T = 190.0°C
Out
T=49.3°C
Substance
n (mol/s)
Ĥ (kJ/mol) n (mol/s)
Ĥ (kJ/mol)
C5H10(1)
0.0
21.708
0.0
C5H10(V) 43.416
43.687
21.708
27.30
Heat
Check significant figures and sign.
Calculate the required cooling rate (a positive number).
! kW
Hint
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Attempts: 3 of 5 used
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Chapter 7 Solutions
Elementary Principles of Chemical Processes, Binder Ready Version
Ch. 7 - A certain gasoline engine has an efficiency of...Ch. 7 - Prob. 7.2PCh. 7 - Prob. 7.3PCh. 7 - Prob. 7.4PCh. 7 - Liquid ethanol is pumped from a large storage tank...Ch. 7 - Air at 300°C and 130 kPa flows through a...Ch. 7 - Prob. 7.7PCh. 7 - Prob. 7.8PCh. 7 - Prob. 7.9PCh. 7 - Prob. 7.10P
Ch. 7 - Prob. 7.11PCh. 7 - Prob. 7.12PCh. 7 - A piston?tted cylinder with a 6-cm inner diameter...Ch. 7 - Prob. 7.14PCh. 7 - Prob. 7.15PCh. 7 - Prob. 7.16PCh. 7 - Prob. 7.17PCh. 7 - Prob. 7.18PCh. 7 - Prob. 7.19PCh. 7 - Prob. 7.20PCh. 7 - Air is heated from 25°C to 140°C prior to entering...Ch. 7 - Prob. 7.22PCh. 7 - Prob. 7.23PCh. 7 - Prob. 7.24PCh. 7 - Prob. 7.25PCh. 7 - The conversion of the kinetic energy of wind to...Ch. 7 - Prob. 7.27PCh. 7 - Prob. 7.28PCh. 7 - Liquid water is fed to a boiler at 24°C and 10 bar...Ch. 7 - Prob. 7.30PCh. 7 - Prob. 7.31PCh. 7 - Saturated steam at a gauge pressure of 2.0 bar is...Ch. 7 - Prob. 7.33PCh. 7 - Prob. 7.34PCh. 7 - Prob. 7.35PCh. 7 - Prob. 7.36PCh. 7 - Prob. 7.37PCh. 7 - Prob. 7.38PCh. 7 - Prob. 7.39PCh. 7 - Prob. 7.40PCh. 7 - Prob. 7.41PCh. 7 - Jets of high-speed steam are used in spray...Ch. 7 - The following diagram shows a simpli?ed version of...Ch. 7 - Three hundred L/h of a 20 mole% C3H880 nC4H10gas...Ch. 7 - Air at 38°C and 97% relative humidity is to be...Ch. 7 - A mixture containing 65.0 mole% acetone (Ac) and...Ch. 7 - Superheated steam at T1(°C) and 20.0 bar is...Ch. 7 - Prob. 7.48PCh. 7 - Prob. 7.49PCh. 7 - Eight fluid ounces (1 qt = 32 oz) of a beverage in...Ch. 7 - Prob. 7.51PCh. 7 - Prob. 7.52PCh. 7 - Prob. 7.53PCh. 7 - Prob. 7.54PCh. 7 - Prob. 7.55PCh. 7 - Prob. 7.56PCh. 7 - Prob. 7.57PCh. 7 - Prob. 7.58PCh. 7 - Prob. 7.59PCh. 7 - Prob. 7.60PCh. 7 - Prob. 7.61PCh. 7 - Prob. 7.62PCh. 7 - Arsenic contamination of aquifers is a major...Ch. 7 - Prob. 7.64PCh. 7 - Prob. 7.65P
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