CHEM 215 Final Exam Study Guide Fall 2004

The final exam will consist of

Part I. (~ 50%) - About 25 to 30 multiple choice questions, some involving calculation, some involving thought.

Part II.(~50%) - Will consist of six or seven longer problems, of which you may omit one!

Likely categories for these problems are:

1. Statistics in analytical chemistry

2. Concentrations,dilutions,stoichiometry

3. Equilibria and Ionic Strength

4. pH calculations

5. spectrophotometry

6. chromatography

7. lab related question

These will mainly be calculations,but could involve description or discussion!

Basics you should know:

1. Simple unit conversions: M, m, % w/w, ppm, density

2. Basic statistics and error analysis:

t-test, Q-test, mean, median, standard deviation, accuracy, precision, confidence limits

systematic and random error, propogation of error

3. Basic stoichiometry

4. Equilibria: acid/base, solubility, ionic strength

5. Be able to calculate the pH of any solution.

6. Understand the purpose, and mechanism of extraction!

7. Chromatography:

a. differentiate between basic types discussed : GC, HPLC, Ion Exchange

b. understand method of separation

c. understand and know basic block diagram for instrumentation

mobile,phase, stationary phase, column, detector

d. understand chromatographic parameters (such as t_R, k', N, etc.)

8. Spectrophotometry:

a. Radiation : l,n,c,E and calculations

b. know basic spectrometer parts and set up

source, sample, monochromator, detector

c. understand differences between absorption and emission,

d. understand Beer's law, standard addition, working curves ---plus calculations

e. Deviations from Beer's law

I'll provide:

• periodic table

• t-table

• q-table

• other data as necessary

• error formulas

You can bring:

• calculator with statistics functions

• at least one #2 pencil . . . the first part of the test will be scantron.