Text: Organic Laboratory
Techniques, a Small Scale Approach, D. Pavia, G. Lampman,G. Krizand, R.
Engel; Saunders Publishing.
Instructor:
Phone/e-mail:
Safety
You are expected to abide by the safety rules
outlined in the Lab Safety Agreement. Your health and life, as well
as your grade, may be greatly affected by not doing so.
Any safety violation will result in
a loss of 5 points. Repetitive (3) violations may result in a failing
grade for the lab.
Work organization
It is crucial for you to be prepared for
the lab each week. This entails reading the required material (the experiment
as well as the techniques) in advance and preparing the procedure in the
notebook. You are not allowed to use a textbook in the lab!!
Please organize your work in such a way,
so that you were finished with the experiment and clean-up by the end of
the scheduled lab period. Glassware must be cleaned and dried and the hot
plate allowed to cool at the end of each lab period. Plan to spend
about 20 minutes doing this.
The experiments are designed so they can
be completed in the time allotted. It may happen that you will finish earlier
if you are prepared. However, do not schedule work or other classes during
the four hours assigned to this class.
Grading
Your grade is a compound of the points
received for a laboratory notebook and the weekly quizzes. The grade is
assigned based on the following percentages:
Lab notebook
67% (20 points)
Quizzes 33%
(10 points)
Quizzes are given within the first 15 minutes
of the lab session and will pertain to the experiment conducted the previous
week and to the required reading for the experiment to be conducted during
the current lab period.
Students who arrive late will only have as
much time to finish the quiz as is left of the assigned 15 minutes.
Reports
Reports (lab notebooks) are due the following
week at the beginning of the lab period, before the quiz.
Only one late report will be accepted with
no loss of points. The second one week late report will result in deduction
of 6 points. Any reports that are more than one week late will not be accepted.
The consecutive late reports will not be accepted.
Glass breakage/care
The glassware used in this laboratory is
extremely expensive. Common sense will definitely prevent breakage. Please
read carefully the section in your lab manual about the care
and use of glassware.
Breaking a piece of glassware from either
a semimicro- or macro kit, or a thermometer will cost you three (3)
points per item.
Remember that you share the equipment with
other lab sections. Not cleaning the glassware after the experiment
will also result in the loss of two (2) points.
Organic Chemistry Laboratory Notebooks
Laboratory notebooks will be graded based on the following criteria:
Format ( 2 points)
Standard lab notebook with carbon-copy pages,
available in the bookstore should be used. All write-ups should be in permanent
ink. Notebook should have a table of contents and pages should be
numbered consecutively.
Each report should begin with a title, date
and the partner’s name (if any).
The procedure, discussion and postlab answers
should be placed on the left-hand side of the page.
The right-hand side should be used for data,
calculations and observations only.
Each report must contain the following
sections:
- Introduction (2 points) In
your own words, state briefly what the experiment is about. Include reactions
and mechanisms, if known, and any physical data needed for the experiment
(density, molecular weight, melting and boiling points, etc.).
- Procedure (3 points) Write
the procedure that will be followed. It should be written in such detail,
so that you could duplicate the experiment using a notebook only (no text
books are allowed in the lab!!!!). Therefore, pictures or drawings of
the equipment set up should be included as well.
The procedure MUST be written before the
lab, but should be amended afterwards if any additional
details are necessary.
It is acceptable, but not encouraged,
to make copies of the procedure and pictures and paste
them onto the notebook page.
- Observations and Data ( 3
points) This section should include any observations made and the data
(e.g. weights/volumes of reagents and products) acquired during the
experiment.
- Results and Discussion ( 6
points) Discuss in detail and interpret your results, including
any IR, GC or GC/MS analyses. Show all calculations (on the right hand-side
of the page). Give results of the calculations, including yields. If your
results are
different from those expected, include plausible explanation for the deviations.
Remember, even if your experimental results
are unexpected or incorrect (e.g. low or no yield), you can still receive
most or all of the results and discussion points, as long as you
reasonably explain where or how the errors occurred. This is why careful
and detailed observations and note taking are necessary during the experiment.
- Questions (4 points) Answer all the postlaboratory questions from the book. Include explanations and, if applicable, calculations.
The original copies of lab reports are
turned in to the instructor. The carbon copies will be left in the notebook
as your record of the experiment.