Review of Basic Concepts
I have compiled the following problems to help serve as a review of some basic
mathematical and chemical concepts.
The problems contained herein are representative
of those fundamental concepts that you should already know and have retained from
previous classes.
Although there are many qualitative aspects to the material presented in
Chemistry 41, this course is primarily a quantitative course which will focus heavily on
problem solving.
As you work through the exercises below, you should go back and
review those concepts that you do not remember, or that you struggled with.
Your
General Chemistry text is an excellent resource to go back and review all of these
fundamental concepts.
If you no longer have your General Chemistry textbook, your
Analytical Methods textbook (Harris, Quantitative Chemical Analysis) has a number of
early chapters that you can go through to review these concepts as well (see course
syllabus).
Finally, you may come to see me if you are unsure how to work any of the
below problems.
Basic Math:
1.
Consider the following expression:
1 . 8 x 1 0
=
( x ) ( x )
( 0 . 5 0

x )
 5
a.
Rearrange the above expression so that it is a quadratic expression in
X.
b.
Use the quadratic equation to solve for
X
. Show your setup and work for this problem.
Ans: X = 3.0 x 10
3
2.
Consider the following calibration plot:
Calibration Plot
Absorbance vs. Fe(II) Concentration
y = 0.0395x  0.001
0.000
0.200
0.400
0.600
0.800
1.000
1.200
1.400
1.600
1.800
0.00
10.00
20.00
30.00
40.00
50.00
[Fe(II)] (ppm)
Absorbance
1
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From the above calibration plot, what is the slope?
b.
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 Spring '08
 tiani
 Chemistry, pH, Chemical reaction

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