Quiz 5 material

[robert zellmer]

Quiz 5 will cover the following: *Chapter 16 (16.6-16.10)*

*Sections 16.6-16.7:*

You need to be able to do calculations for weak acids and bases
(using ICE tables).  You should understand what polyprotic acids
are and how to do calculations for them.

*Section 16.8:

*Relationship between K_a , K_b and K_w, pK_a , pK_b and pK_w for a
conjugate acid-base pair.

*Section 16.9:
*
You need to understand hydrolysis problems (acid-base properties of
salt solutions).  Know how the relationship between K_a , K_b and K_w for
a conjugate acid-base pair is used for these problems.  Be able to do
calculations for salt solutions to determine pH, etc.  This means
setting up an equilibrium (ICE) table.  You need to understand what
the controlling equilibrium reaction is in order to set up the proper
ICE table.

*Section 16.10:
***
Acid-base behavior and structure. Make comparisons of acid and base
strengths for different acids based on structure.


On the quiz, if you need to use an ICE table, you must show the work
and the ICE table.  When making any assumptions you should show that
your assumptions are okay (less than 5% error).  If the percent error
is greater than 5%, you need to solve the resulting quadratic equation
or use the method of successive approximations (both shown in class
and in the notes).  You must show this work.  If you don't, you will
not get full credit.  Simply showing the ratio of K_a /[HA]_o < 10^-3
is not sufficient (similarly for a base using K_b and [base]_o ).

*There are 5 links concerning acids and bases on my class web page.  Go to**
**the "Helpful Tidbits" link and you will find them at the bottom.  These**
**came about from answering e-mail questions from students over the years.**
**The first two links apply to the material covered by this quiz.*


*Homework coverage (you should be able to all problems in the given 
ranges):**
*
For those of you using the 14th edition the quiz covers sections 16.6-16.10
You should be able to do homework problems 16.5-16.11, 16.49-16.92,
16.101-16.103, 16.105-16.115, 16.119, 16.122-16.126

For those of you using the 13th edition the quiz covers sections 16.6-16.10
You should be able to do homework problems 16.5-16.11, 16.49-16.92,
16.101-16.103, 16.105-16.115, 16.119, 16.122-16.126

*For the on-line homework:**
*
****For Credit:
C****h 16 (16.6-16.10) tutorials 2
Ch 16b (16.6-16.10) Homework Review.

Make sure you can do the assigned textbook questions, the tutorials and 
the homework
review questions.

NOT for credit:
DSM module (Key General Chemistry Skills Acid and Base Equilibria 
Dynamic Study Module)
which covers this material.


Dr. Zellmer
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