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solution manual Elements of Chemical Reaction Engineering Fogler 6th Edition
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Solution Manual Elements of Chemical Reaction Engineering Fogler 6th Edition - Updated 2024 Complete Solution Manual
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Synopsis for Chapter 1 – Mole BalancesMole balances are the first building block of the chemical reaction engineering algorithm.
General: The goal of these problems are to reinforce the definitions and provide an understanding of the
mole balances of the different types of reactors. It lays the foundation for step 1 of the algorithm in
Chapter 5.
Key to Nomenclature
l = Always assigned I = Infrequently assigned
AA = Always assign one from the group of S = Seldom assigned
alternates G = Graduate level
O = Often assigned N = Never assigned
E.g., means problem l P1-3B will be assigned every time I teach the course, problem AA P1-8 means that
this problem or one of the other problems with the prefix AA is always assigned for this chapter, Problem
l P1-2 will be infrequently assigned, Problem O P1-6B will often be assigned, and Problem S P3-16B is
seldom assigned.
Alternates: In problems that have a dot in conjunction with AA means that one of the problems, either
the problem with a dot or any one of the alternates are always assigned.
Time: Approximate time in minutes it would take a B student to solve the problem.
l Q1-1A (9 seconds) Questions Before Reading (QBR).
(a) John Falconer at the University of Colorado gives workshops on Teaching in which he points out
that students have a better comprehension if they ask themselves a question before reading
the text. The first question of each chapter, Q1, is just such a question.
(b) The students are asked, at a minimum read through the Questions to help put the chapter and
their studies in perspective.
(c) I encourage using the i>Clicker questions.
l Q1-2A (8-10 min) i>Clicker
l Q1-5A (5-75 min) through Q1-12A. To get a “feel” of the resources available, the students should
spend a total of about 50-75 minutes on these questions.
Computer Simulations and Experiments (5-15 minutes per simulation)
These problems are interactive and are a minor paradigm shift in the way we use homework problems.
Here the students are asked to explore the reaction and the reactor in which they occur to get an
intuitive feel and understanding of the reactor system. This procedure is called Inquiry Based Learning
(IBL).
l P1-1A (10-15 min) Good introduction to the use of Wolfram and Python.
Problems
I P1-2B (60 min) Problem reinforces wide range of applications of CRE and problem is given in the
web module which can be accessed from the Web Home Page (www.umich.edu/~elements). Many
students like this straight forward problem because they see how CRE principles can be applied to
S1-1
, an everyday example. It is often assigned as an in-class problem where parts (a) through (f) are
printed out from the web and given to the students in class. Part (g) is usually omitted.
l P1-3B (45 min) I always assign this problem so that the students will learn how to use
Polymath/MATLAB, Wolfram and Python before needing it for chemical reaction engineering
problems. Most problems will use either Polymath or MATLAB to solve the end of chapter problems.
l P1-4A (30 min) The Interactive Computer Games (ICGs) have been found to be a great motivation
for this material. This ICG will help student AIChE chapters prepare for the Jeopardy Competition at
the Annual AIChE Meeting.
l P1-5A (10 min) Old Exam Question (OEQ) to reinforce the convention and stoichiometry in mole
balances.
O P1-6B (30 min) A hint of things to come on sizing reactors. Fairly straight forward problem to make
a calculation. Uses Example 1-1 to calculate a CSTR volume. It is straight forward and gives the
student an idea of things to come in terms of sizing reactors in chapter 4.
I P1-7A (30 min) Helps develop critical thinking and analysis.
AA P1-8A (20 min) Puzzle problem to identify errors in the solution. Many students especially those
who enjoy working Sudoku or crossword puzzles enjoy working these types of problems.
S1-2
, Solutions for Chapter 1 – Mole Balances
Useful Links:
1. Click on the link given below to download Wolfram/python codes for Ch-1
http://umich.edu/~elements/5e/01chap/obj.html#/
2. Click on the link given below to view Wolfram tutorial (for running Wolfram Codes)
http://umich.edu/~elements/5e/software/Wolfram_LEP_tutorial.pdf
3. Click on the link given below to view Polymath tutorial (for running Polymath Codes)
http://umich.edu/~elements/5e/tutorials/Polymath_LEP_tutorial.pdf
Q1-1 Individualized solution.
Q1-2 Individualized solution.
Q1-3
For CSTR:
FA0 X A FA0 X A v0 C A 0 X A v0 X A 10 * 0.9
V= = = = = =391.3 dm3
- rA,exit kC A kC A0 (1 - X A ) k (1 - X A ) 0.23 * (0.1)
Q1-4 Individualized solution.
Q1-5 Individualized solution
Q1-6 Individualized solution
Q1-7 (a)
The assumptions made in deriving the design equation of a batch reactor are:
- Closed system: no streams carrying mass enter or leave the system
- Well mixed, no spatial variation in system properties
- Constant Volume or constant pressure
Q1-7 (b)
The assumptions made in deriving the design equation of CSTR, are:
- Steady state
- No spatial variation in concentration, temperature, or reaction rate throughout the vessel
Q1-7 (c)
The assumptions made in deriving the design equation of PFR are:
- Steady state
- No radial variation in properties of the system
1-1
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