Book problems
A minimal set of suggested problems for each chapter of
the textbook are listed below. I use the word minimal because
this
set will be enough to get you started, but will not be enough for both
learning the material and then reviewing it for exam purposes. Doing
problems
is the best way to test your understanding of the material in Chem 5.
It is essential that you do problems in between each class meeting, not
save them up for just before the exams. If you have trouble with the
problems,
consult your lecture notes and the appropriate sections of the text
book.
If that is not enough then ask for help from a friend, a study group,
or Prof. Kull (first half of term) or Prof. Cantor (second half of
term)
in office hours. Look at the solutions manual only as a last resort!
You
can check your answers to selected odd-numbered problems in the back of
the textbook. Solutions to all problems are in the Complete Solutions
Guide, which is on reserve in Kresge Library.
Chapter 2: 20, 21, 23, 29, 32, 33, 34, 38-43,
46,
47, 53, 54 57
Chapter 3: 22, 23, 25, 28-30, 32, 35, 39, 43-45,
47, 48, 51, 53, 55, 56, 59, 61, 65, 67
Chapter 4: 15, 18, 21, 25, 27, 29, 32, 37, 39,
43,
49, 51, 55, 57, 58, 63, 67
Chapter 5.1-5.5: 27, 29, 32, 36, 39, 45, 49, 51,
56
Chapter 6: 17, 19, 25, 27, 30, 33, 37, 42, 45, 57
Chapter 7: 17, 31, 33, 37, 43, 45, 63, 67, 83,
85,
89
Chapter 8: 24, 28, 29, 31, 39, 43, 53, 61
Part II (Prof. Cantor)
In
lecture, I will not follow the order of the material as presented in
chapters 9 and 10. The approximate order will be:
9.1, 10.2, 9.2-9.3, 10.14, 9.5,
9.6, 9.4. Then we'll do the bulk of chapter 10 more or less
in the following order: brief introduction to Carnot engines and
the second law (not in text), 10.4, 10.5, 10.8, then a quick overview
of 10.1 and 10.3. (This is the end of the material to be covered
on Exam #3.) We will then go over 10.7, 10.9-10.11.
While
you're not responsible for the applications covered in sections 9.7 and
9.8, they are worth reading, if you have the time.
IN GENERAL: Every time you see an equation,
be sure you can answer the following question about it:
"For which
systems, and under what conditions, is this equation valid?"
Chapter 9.1: 17,
19, 67, 68
Chapter 10.2, 10.14:
25, 26, 99, 100, 101
Chapter 9.2-9.6:
25,
27, 45, 47, 49, 53, 55, 57, 61, 73, 29, 31, 33, 37, 39, 41.
Problems 79 and 81 are good, and require some thought; see me if
you want a hint.
Chapter 10.4,
10.5, 10.8, [10.1, 10.3]*:
27, 28, 30, 31. Then, for the following problems, only calculate
∆S: 93, 94, 95, 97, 98, 106(a-d). Finally, do problems 37,
39, 41, and 89.
* NOTE: I will not cover the
material in 10.1 and 10.3 in as much detail as is done in the
text.
----
end
of material to be covered on Exam #3 ----
Remainder of Chapter 10:
Readings: sections 10.7,
10.9, 10.10, 10.11
Problems:
I've selected quite a few problems; do as many of them as
possible:
• Phase equilibria: 43, 45, 46, 81
• Chemical rxns: 47, 49, 51, 54, 56, 57
• Chemical rxns (P- and T-dependence): 58-62, 65, 66, 69, 70, 72, 73,
84, 102, 103
• Chemical rxns not involving gases:
79, 83*, 85.
*The wording of Problem 83 is confusing.
Here's how I would state it: suppose you start with 1.00 liter of
a 1.00M solution of HCl, and dilute the solution by a factor of 10
(i.e., add 9.00 liters of water to end up with 10.00 liters of a 0.100M
solution). Calculate the ∆G for this dilution process. Do
you expect it to be positive, negative or zero?
Chapter 11:
Readings:
sections 11.1-11.4 cover the basics; start with this
material. (I'll won't follow the "maximum work" approach on pp.
467-8; this is equivalent to the derivation of the equation
∆G + ∆Eelec ≤ 0 that I covered in lecture on Nov.
24.) The short sections (11.5 and 11.6) on batteries, dry cells,
and on corrosion are important applications, but because they are very
straight-forward examples of the general principles we will develop, I
won't cover them in lecture. I will cover electrolysis (section
11.7) in class. You are not responsible for the material in
section 11.8.
Problems: There are
plenty of good problems; here's a good selection:
• Relation between E° of cells and of half-reactions: 19,
21, 23, 29, 31, 88
• Relation between E°, ∆G°, and K for cells: 35, 39, 41,
44, 47, 83
• Relation between E°, ∆G°, and K for half-reactions: 43
• Concentration effects (Nernst): 49, 51, 53, 55, 57, 79, 89, 91,
93*, 95**
• Electrolysis: 61, 69
*In 93(b) the descriptions of the partial pressures is a bit
confusing. It should be
P(NO2) = 0.002 atm, and
P(NO) = 1 - P(NO2) = 0.998atm ≈ 1.00atm.
** Problem 95 is related to 89; you might want to do them
together.
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