Courses

ATTENDANCE AND GRADING POLICY

CHEMISTRY 3343, SPRING 2003, T. E. SNIDER

Office SC 225L, (580) 581-2890, teds@cameron.edu ,  

1. TEXT: The Systematic Identification of Organic Compounds , 7^th ed., Shriner, Hermann, Morrill, Curtin , Fuson. Older editions of this text are suitable if the student supplements them with modern texts of Organic Chemistry and Organic Spectroscopy. Lecture is 1:00 pm on Tuesdays in SC 201 and laboratory is 8-10:50 Tuesday and Thursday. 

2. GRADING SCALE: A (92-100 %), B (82-91.9%), C (70-81.9%), D (60-69.9%), F (0-59.9%) of points possible. 

3. GRADED PAPERS: There will be a two major tests (a midterm {100 points} and the final{200 points}), five unknowns to identify (three single component and one double component mixture) each component worth 100 points; possibly a gas chromatograph unknown mixture worth 50 points; a reaction notebook done on the computer with ChemWin or other suitable drawing program consisting of 25 reactions from chapter 7 and / or chapter 8 of the text appropriately drawn, labeled, and catagorized worth 50 points; a spectra problem collection of homework (10 of 12 problems @ worth 10 points = 100 points); and a text book problem set ( 10 of 12 assigned problems @ worth 10 points = 100 points). To know your grade at any moment, you must keep a running total of points earned and points possible. Simply do the division and refer to the "Grading Scale". 

4. CLASSROOM ACTIVITIES : The lectures for the first 6-8 weeks will be basically a description of techniques and variation of techniques to be applied to the laboratory that week for the identification of your first three unknowns. The latter weeks will be spent on chemical reactions, functional group relationships, and critical thinking techniques for the solution of the assigned problems and identification of unknowns. Classroom attendance is not mandatory nor will you be penalized for absences however laboratory attendance is mandatory and failure to complete laboratory assignments in the times allotted will severely impact your grade. I will make the laboratory available Saturday mornings on the following days: January 13, January 27, February 3, March 24, April 7, April 21. These are extra days for your convenience and under no circumstance should you consider them mandatory. However you may work ahead and if you finish ahead of schedule more power to you. Please note that I will be here at 8:00 am. If no one shows up to work before 9:00 am I will assume that no one is coming and I will leave. The lab will close promptly at noon. 

5. GRADING STANDARDS: For each correctly identified unknown (For those unknowns where various spectra cannot be prepared because of solubility and / or other physical problems, the requirement will be waived, i.e. you will be given the points if the conclusion is correct.) 

Physical constants (mp or bp)  -  7 points

Elemental analysis    -  8 points

Solubility behavior    -  7 points

Classification Tests    -  7 points

IR spectra    - 7 points

HNMR spectra with integration  -  7 points

GCMS spectra    - 7 points

Derivative formation   - 50 points

100 points per correctly identified unknown X 5 = 500 points

Unknowns that are incorrectly or partially identified may at the maximum receive * of each of the above points in each category and will likely receive less than * because of errors in data collection or interpretation.  

10 unknown spectral problems  - 100 points (10 points @)

10 unknown book problems  - 100 points (10 points @)

1 gas chromatograph unknown  - 50 points

1 reaction notebook    - 50 points (2 points per reaction)

1 midterm    - 100 points

1 final      - 200 points

1100 points total possible 

From a practicality standpoint, the course is designed such that missing one unknown will make a grade of "B" the maximum possible. Missing two unknowns will make a grade of "C" the maximum possible. I am not referring to mathematical possibilities here but the reality of what the grade would most likely total. 

6. SUBMISSION OF ASSIGNMENTS: All papers to be turned in must have your name on them. All papers may only be turned in to me personally. They may not be turned in to another faculty member, the secretary, my mailbox, slipped under my door, etc. I am here generally 8 to 5 daily and it will not be a hardship on you to find me to turn in your assignments if you have failed to turn them in during class when requested. Any assignments submitted otherwise will be immediately placed in the trash can. Your unknowns are to be submitted on the forms supplied to you. The forms are to be completely filled out and you are to acknowledge any missing data / blanks by placing an NA (not applicable) or DND (did not do) in the blanks. Append all spectra and spectral results.  

7. COURSE CONTENT: Organic analysis is a hands on totally pragmatic laboratory course in the qualitative identification of organic compounds. The student will identify a minimum of five organic compound unknowns by full characterization of physical, chemical, and spectral properties. Additionally the student will identify both qualitatively and quantitatively an unknown mixture of alcohols by gas chromatography. The student will review techniques and learn new techniques for the physical examination of unknown substances, measurement of refractive indices, determination of melting / boiling points, solubility behavior, sodium fusions and elemental analysis, the operation of and the sample preparation for Fourier transform Infrared Spectroscopy, Proton Nuclear Magnetic Resonance, and Gas Chromatography / Mass Spectra analysis. The student will learn new tabulation formats and how to search the literature for appropriate derivatives. The student will also learn micro techniques for the preparation and isolation of appropriate derivatives for the identification of unknown substances. The student is responsible for scheduling appropriate laboratory times with the instructor for personal instruction in the care, maintenance, and operation of the various instruments involved. By the end of the semester the student should be able to :............. 

Clean and maintain the melting point apparatus.

Properly set up and ignite an oxygen / acetylene torch for glass blowing operations

Seal micro boilers for boiling points.

Prepare capillary tubes for the suitable micro boiling point determinations.

Prepare solid and liquid samples for Infrared Spectral analysis as mulls, neat sample, KBr pellets, and melts.

Be able to operate and scan spectra on an Infrared Spectrometer.

Prepare solid and liquid samples for Proton Nuclear Magnetic Resonance with internal standards.

Be able to operate and scan spectra on an Proton Nuclear Magnetic Resonance Spectrometer.

Prepare samples for Mass Spectral analysis.

Be able to operate and scan spectra on an Mass Spectrometer.

Do basic maintenance on spectrometers of various types.

Understand, operate and maintain a gas chromatograph.

Accurately measure / determine physical constants of organic compounds.

Distinguish and identify most functional groups of organic compounds by both chemical and spectroscopic techniques.

Be able to search the literature for identifying characteristics of organic compounds.

Make discerning conclusions about chemical, physical, and spectroscopic properties of organic compounds.

Make discerning decisions relative to the safety, toxicity, and handling of organic compounds.

Make discerning decisions about the appropriateness of derivatives of organic compounds.

Make discerning decisions relative to appropriate methods of separation and purification of mixtures of organic compounds.

Recrystallize for purification small quantities of a substance in an efficient manner

Distinguish and identify most organic compounds by both chemical and spectroscopic techniques. 

Additionally the student will have reviewed and been tested over ......

Reactions utilized for classifications tests.

Spectroscopic techniques for identification of organic compounds.

Derivatization reactions utilized to make derivative of most functional groups. 

Laboratory Schedule