Instructor: Dr. Gregory L.
Milligan, T.J. Underwood
Lab times: Tuesday 9 – 11:50 (Section A, Underwood) 2
– 4:50 (Section B, Milligan)
Laboratory: Room 106
Office: Room 103
Office hours: M, W, R, F
11:00-11:50; U, H 12:00 – 12:50
Textbook: None
Grading: 13 Experiments
@ 15 points each = 195
points
1 Midterm
Exam @ 25 points = 25 points
1 Final
exam @ 50 points =
100 points
Total
= 320 points
The purpose of this
course is to introduce the student to the techniques used in an organic
chemistry research laboratory. As a second semester of a second-year course,
the experiments will be quite challenging, the techniques more demanding, and
the equipment more sophisticated. Furthermore, the student will need to call
upon his or her judgment and ingenuity to solve problems that inevitably will
be encountered. The student is expected
to do the research necessary to understand, complete, and benefit from the
laboratory experience!
The experiments will
be performed in “tracks”. Each track begins with a mixture of two organic
compounds. The compounds may be organic acids, organic bases, and/or neutral
organic compounds. The first task of the track is to separate the mixture using
acid-base-neutral extraction or distillation. Once the components of the
mixture are separated, they must be identified using NMR and IR spectroscopy.
Once identified, the separate compounds are used in further transformations.
The products of the transformations must then be purified and identified
spectroscopically. Each initial separation and each subsequent transformation
counts as an experiment. When all of the transformations in a track are
complete, the next track may be begun. All
writeups for the experiments in a track must be turned in before another track
is begun!
Experiments are worth
15 points each. One midterm and a final exam will be given. The midterm will be
"take-home" and will be worth 25 points. The final will last about 1
hour, and will be worth 50 points. Final grades will be assigned the “old-fashioned”
way: 90-100% = “A”, 80-89% = “B”, 70-79% = “C”, 60-69% = “D”, and below 60 =
“F”.
Safety is of the
utmost importance; no experiment is worth an injury. The most important piece of safety equipment
is the brain of the student. Think about
what you are doing all the time. Ask
yourself if you are doing things in the safest way possible. Plan for the worst. No work may be done
outside of scheduled lab times unless approved by the instructor!
Safety goggles MUST be worn AT ALL TIMES in
the lab. The goggles must be in place before the student enters the lab, or
first thing upon arrival. I strongly suggest that the student wear a lab coat
or apron. This need not be elaborate; an
old shirt or apron worn over street clothes offers a measure of protection. Aprons are available in the lab for students'
use. Under no circumstances may the
student wear shorts, short skirts,
or open-toed shoes. Latex
and vinyl gloves are provided for students' use in the lab but be aware that
the gloves, vinyl especially, are attacked by organic solvents and offer only
limited, temporary protection.
Each student will keep
a proper notebook. Notebooks may be
purchased at the Bookstore. You may use a notebook from General Chem. Lab as
long as it has duplicate, numbered pages. All notations and calculations
must be written in the notebook; not on any other piece of paper. The
student will write down everything that can be written down in advance of the
actual experiment, including the procedure to be followed and the tables to be
used with the experiment. When the experiment is performed, any changes from
the original plan are noted, as are any observations made. When an item needs
to be changed, it is crossed out with a single line and the new item is added.
After the experiment is done, the student completes all calculations and data
analysis in the notebook. The report that is turned in should include: 1) A
fully completed "writeup cover sheet" (see online experiment) and: 2)
The carbonless copy of the notebook pages for that experiment. The notebook
pages are not expected to be a “cleaned-up” version of events. They will have
crossed-out mistakes and changes, spills, burn marks, etc. This will not affect
the grade for the lab; what counts is that the required items are present. The
student is expected to learn to use ChemSketch to generate structures for
inclusion in lab reports.
Finally, the student
is reminded that labs are fun! If you work safely and efficiently, I am
confident you will find Organic lab enjoyable and rewarding.
If you need course
adaptations or accommodations because of a disability, if you have medical
and/or safety concerns to share with me, or if you need special arrangements in
case the building must be evacuated, please make an appointment with me
as-soon-as possible.
|
Track |
Date |
Task |
Transformation
ID |
|
0 |
1/16 |
Measurements and manipulations |
M |
|
1 |
1/23 |
Separate an organic acid from a neutral organic |
S1 |
|
1/30 |
Organic acid transformation |
T1A1 |
|
|
2/6 |
Organic neutral transformation |
T1N1 |
|
|
2 |
2/13 |
Separate an organic acid from a neutral organic |
S2 |
|
2/20 |
Organic acid transformation |
T2A1 |
|
|
2/27 |
Organic acid transformation |
T2A2 |
|
|
3/6 |
Organic neutral transformation |
T2N1 |
|
|
3/20 |
Organic neutral transformation |
T2N2 |
|
|
|
3/27 |
Catch-up day |
|
|
3 |
4/3 |
Separate an organic acid, base, and neutral |
S3 |
|
4/10 |
Organic acid transformation |
T3A1 |
|
|
4/17 |
Organic neutral transformation |
T3N1 |
|
|
4/24 |
Organic base transformation |
T2B1 |