Syllabus - Goshen College



Syllabus

Thermodynamics Laboratory (CHEM 310L and PHYS 310L) FALL 2010

Instructor: Daniel A. Smith, office Sci 011, Phone 7315 (535-7315)

Text: Shoemaker, D. P.; Garland, C. W.; Nibler, J. W. Experiments in Physical Chemistry; 8th Ed.; McGraw- Hill Publishing Company, New York, NY, 2009.

Class Meetings and Assignments (subject to change):

Dates |Intro/Cal/

check-in |T1

NMR |ΔHvap |Phase

diagram |Kinetics |calorimetry |Statistical

thermo. |checkout/

cleanup | |Sept 2 |All | | | | | | | | |Sept 9 |All | | | | | | | | |Sept 16 | |A |B |C |D |E | | | |Sept 23 | |A |B |C |D |E | | | |Sept 30 | |B |C |D |E |A | | | |Oct 7 | |B |C |D |E |A | | | |Oct 14 | |C |D |E |A |B | | | |Oct 21 | |C |D |E |A |B | | | |Oct 28 | |D |E |A |B |C | | | |Nov 4 | |D |E |A |B |C | | | |Nov 11 | |E |A |B |C |D | | | |Nov 18 | |E |A |B |C |D | | | |Dec 2 | | | | | | |All |All | |Partners

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Read:

Read chapters I and II of Shoemaker, D. P.; Garland, C. W.; Nibler, J. W. Experiments in Physical Chemistry; 8th Ed.; McGraw-Hill Publishing Company, New York, NY, 1996. Particularly note the section on reports in chapter I and the section on error propagation in chapter II. We will be using these formats for the remainder of the semester.

Academic Support

Goshen College wants to help all students be as academically successful as possible.  If you have a disability and require accommodations, please contact the instructor or the Director of the Academic Support Center, Lois Martin, early in the semester so that your learning needs may be appropriately met.  In order to receive accommodations, documentation concerning your disability must be on file with the Academic Support Center, KU004, x7576, lmartin@goshen.edu.   All information will be held in the strictest confidence.  The Academic Support Center offers tutoring and writing assistance for all students.  For further information please see goshen.edu/studentlife/asc.php.

Grading:

The course grade will be determined based on the average of six laboratory reports and six pre-laboratory exercises. Each laboratory report will be worth 100 points and prelab will be worth 20 points Grades will be based on a straight percentage scale with minimum cutoffs being A - 93%, A- - 90%, +B - 87%, B – 83%, -B – 80%, +C – 77%, C-73%, -C – 70%, +D – 67%, D-60%. . At the end of your laboratory work each day you are to have me sign your notebook. If your notebook is up-to-date and in good order (sufficient detail in recording your procedure) you will receive 20 points. The course grade is not intended to be a wage, neither is the grade intended to reflect how hard you have worked. They are intended to be a measure of your ability to collect and discuss data as a mature scientist relative to other members of your class and previous classes.

. Item number and point value Possible Points Percent of total grade

Lab reports 6 x 120 720 88 %

Prelab 6 x 20 120 15 %

Typed report 6 x 100 600 73 %

End of day checks 12 x 20 240 12 %

Expectations

Students are expected to be in the lab on dates scheduled for laboratory experiments to be conducted. Furthermore, the experiments are to be completed within the allotted laboratory time. This may mean that for some experiments extremely efficient use of time will be required. Pre-lab assignments will be collected prior to the onset of each experiment. Since time will be at a premium, and since lab work cannot begin until the pre-laboratory exercise is completed, it is recommended that the student finish these assignments prior to arriving at the laboratory (you are welcome to have me check them the afternoon prior to the lab). The pre-laboratory assignments are designed such that if properly completed the laboratory data will, at least in part, be handled in a similar manner. Thus, using Excel allows easy substitution of your data for the pre-lab data. This should considerably shorten the amount of time necessary for working up your laboratory data. Each pre-lab assignment will be worth 20 points.

Students will work in pairs to conduct the experiments. Each pair of students has two weeks to complete the experimental work for most experiments. I recommend that after the first set of data (or after the first week of each experiment) you should do a preliminary “work up” of the data. This will likely point out any mistakes or data which you inadvertently neglected to record. This may allow an opportunity to recollect data if necessary. Partners will work together to collect data for each lab. Each partner should have a copy of the original data when they leave the laboratory at the end of each session. A bound laboratory notebook is to be used to record all data. Notebooks are available in the science secretary’s office for $15.00. This will serve as the only source for verifying your report. Your instructor will initial your notebook at the completion of each experiment (or the end of the day’s work, which ever comes first). Partners who miss a lab for any unauthorized reason are not entitled to share data collected in their absence.

I encourage partners to edit each others reports after they have individually “worked up” the collected data and have written a report separately. This will increase the likelihood of catching errors in the reports, and thus, benefit both students.

Due Date: Laboratory reports are due at the beginning of lab two weeks after the experiment has been completed. A 10 points penalty will be assessed for each day the report is late. For the last two experiments the semester does not allow sufficient time for this two week interval. The last experiment in rotation is due December 2 at 5 pm. The statistical mechanics experiment does not require a formal report, rather I expect a clearly annotated excel spread sheet.

Dates to hand in your notebook:

September 23 Calibration lab

October 7 Experiment 1

October 21 Experiment 2

November 4 Experiment 3

November 18 Experiment 4

December 2 Experiment 5

December 10 Statistical Mechanics annotated spread sheet

Academic Dishonesty: Academic dishonesty (cheating, data falsification, etc) will be treated as a serious offense. In most cases it will result in a minimum of the assignment not counting (0 points on the assignment) and it will be reported to the Associate Academic Dean. Other consequences may result directly or indirectly and may include failing the course and expulsion from the college. See the “Student Handbook” posted under “Student Life” on the Goshen College web page.

Academic Support

Goshen College wants to help all students be as academically successful as possible. If you have a disability and require accommodations, please contact the instructor or the Director of the Academic Support Center, Lois Martin, early in the semester so that your learning needs may be appropriately met. In order to receive accommodations, documentation concerning your disability must be on file with the Academic Support Center, KU004, x7576, lmartin@goshen.edu. All information will be held in the strictest confidence. The Academic Support Center offers tutoring and writing assistance for all students. For further information please see goshen.edu/studentlife/asc.php.

Notebook: Your notebook will be set up as follows:

Each page will contain:

top left: page continued from top center: title of experiment top right: page number,

bottom left: prof signature bottom center: your signature bottom right: page experiment continues on

Each experimental write-up will take this format:

Brief outline of expected procedure (sufficient to allow work to be completed from the outline rather than referring to a text continually)

Reaction (if appropriate - probably not used in the experiments in this course)

Safety precautions: physical and chemical hazards (check MSDS sheets for each reagent used!!)

The above sections will be completed before entering the laboratory !

Detailed experimental written as the experiment is conducted. This should be in sufficient detail to allow another chemist to duplicate your experiment exactly.

The above section will be completed while in the laboratory !

Calculations

Discussion a brief discussion high lighting the main points discovered in the experiment.

Conclusion a concluding paragraph the states the final results – probably quite similar to the concluding paragraph of the formal report.

General notes about your notebook:

1) Include a table of contents on the first page (or two).

2) Do not skip pages intending to fill them in later. If you begin a second experiment before you finish writing up the first experiment, which is expected to happen occasionally, continue on the next available page. This is why each page will say continued on/from.

3) If you make a mistake in calculations or discussion/reasoning a single line through the text or data (or an X if the entire page is in error) is sufficient. The text and data should still be legible in case at a later time you realize it was correct.

4) Spelling and grammar are not of primary concern in the notebook although it should be clearly legible and discernible.

5) You may include under discussion ways to improve the experimental accuracy.

6) The use of spread sheets (Excel) are encouraged. Printouts from a spread sheet may be fastened permanently to your notebook to facilitate efficient use of time and avoid coping errors. These along with spectra may be attached to the left hand pages to save space

7) All spectra and supporting documents should be permanently fastened to the notebook. Loose pages will be removed. Remember this is the only permanent record of the experiment!

Formal Report

The formal report will follow the format suggested in chapter I of the lab text. To summarize this should include.

Introductory paragraph indicating why the value sought or the technique is important and briefly review the technique used.

Discussion (several paragraphs) First sentence or two is the experimental, it most often will merely be a sentence that references the text or my handout. Thoroughly explain your data and derived results. Discuss theory and implications. clearly and concisely report your findings (include error limits), compare your results to any literature available, show equations and/or calculations, compare, contrast and comment on methods used.)

Graphs and Tables (Include: Title, Labels on both axes, drawn in ink, they should be of high quality graphics if drawn on a computer, use an 8 1/2-11 inch page for each one.)

Do not give step by step instructions of how the experiment was conducted.

Concluding paragraph (Summary of results in 4-6 sentences. What are the major points of your work. Again the findings and uncertainties will be clearly stated.) No new material should be included in this paragraph.

References (Use Endnotes, number in one consecutive series in the order in which they appear in the text). Examine several recent JACS communications and articles to familiarize yourself with style and reference requirements. References are to be in the ACS accepted format,

for articles this is typically:

Lastname1, FI1.; Lastname2, FI2. Journ. Abbr. Year, Volume, firstpage-lastpage.

and for texts:

Authors (Lastname1, FI1.; Lastname2, FI2.) title; Editor (Lastname1, FI1.; Lastname2, FI2., Ed.); Publisher, city, state (or country), Year; Vol., chapter, page(s) (p or pp.).

Physical Chemistry Notebook Grading Sheet

__________________________________________________________________________________

Formal Report

_____ (5) Introductory paragraph

_____ (5) Calculations (correct)

_____ (10) Discussion

_____ (10) Conclusion

_____ (10) Bibliography (technically correct, sufficient)

_____ (10) error limits (present, reasonable or supportable)

_____ (50) Understanding of the experiment(50 excellent,40 very good, 30 adequate, 20 weak, 10 clear misunderstandings, 0 ?

COMMENTS:

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