2. The Laboratory Timetable
This is the order of events for a normal week of Organic Chemistry lab.
Follow this schedule unless your instructor tells you otherwise.
1. Study and Prepare Notebook
After an experiment is complete, be sure to re-read and study the on-line
notes associated with that experiment. After the experiment has been carried
out, after a pre-experiment lecture has been heard, and after the datasheet has
been answered, the on-line notes will make much more sense than the first
time they were read. This will help you understand the theory and background
of the experiment in more depth. Ten of the fifteen points on the upcoming quiz
will be on the experiment that was completed the prior week.
During the week before the experiment, study the pages in the manual
regarding the next experiment and be sure to read the on-line notes associated
with that experiment. The syllabus includes the schedule of experiments. Use
the objectives included with the experiment and the associated lecture notes on
the Chemistry Department web site as a guide for your studying. The main
purpose of this studying is to prepare yourself to work safely and efficiently in
the lab. In addition, you will get more out of the week's experiment if you know
some of the theoretical background before coming to lab. Approximately 5 of
the 15 points on the pre-experiment quiz will be on this material.
You have at least one whole week between experiments. That is the time
to do this studying and to get any questions answered by your instructor. The
time immediately before the quiz begins is not the time for studying or for
asking questions.
Before you enter the lab you also need to have prepared the first seven
sections of your notebook for the coming experiment. This is explained in detail
in the next chapter of this manual (chapter 3). You will not be allowed to do the
experiment without having the first seven sections for that experiment
complete in your notebook.
2. Check in, Swipe in and Sign in
As soon as your instructor has activated the card reader, swipe in. The
card reader becomes inactive 10 minutes after the official start of class. It is
your responsibility to ensure that your attendance has been recorded.
At the beginning of the lab, open your lockers and check the equipment.
A list of all equipment which should be located in each set of lockers is
provided at the end of this chapter. Make sure everything is there and in good
condition. If anything is missing or broken, first look for a replacement in the
“Extra Glassware Cabinet” located in the back of the lab. If the item you need is
not in the “Extra Glassware Cabinet”, go to the stockroom window in NCF 362
and have it replaced. When you go to the stockroom be sure to know your
locker numbers and the correct name of the item needing replacing. The
student who is assigned the drawers in the previous class will be charged for
any missing or broken glassware. Dirty glassware can be replaced at the
stockroom. The prior student will be charged half price for any dirty item.
When all of the equipment is there and in good condition, sign the sign-in sheet
provided by your instructor.
You will be sharing your locker with students in other sections. You are
responsible for the equipment from the time you unlock your locker and check
the equipment until the next student unlocks it and verifies that all of the
equipment is there and in good condition. At the start of the lab, any missing
or broken equipment will be charged to the previous user.
After the lab is underway, you are responsible and you will be charged.
You must check at the beginning of lab. If you go to the stockroom to
replace missing or broken equipment after the lab has been underway
for a while, you will be charged even if you claim that you are not
responsible. Signing in acknowledges your responsibility, but you are
responsible if you work in the lab whether or not you sign in.
3. Quiz
A quiz is given at the beginning of each lab session. This takes about 1015 minutes. Be ready to take the quiz at the start of class. Extra time will not
be given for late arrivals. Approximately ten of the fifteen points cover what was
done the previous week. Approximately five of the fifteen points are on the
experiment that will be done that day. Many quiz questions are taken from the
on-line notes and the pre-experiment lecture. Be sure to study both of these
items.
4. Pre-experiment Lecture
After the quiz, your instructor will discuss some of the theoretical
background and practical aspects of the day’s experiment with the class. This
section takes from 20-30 minutes. Safety and other practical aspects of lab
operation will also be covered during this time.
5. Check in and Sign in
If you did not do this earlier or didn’t have time to finish, do it now. (See
#2 above for details.)
6. The Experiment
Do the experiment. You should not leave the laboratory during the
experiment without informing your instructor. Most instructors exempt trips
to the stockroom or the rest room from this requirement. If you do leave, make
sure that it is safe to leave the experiment at that point. Never leave a piece of
heating equipment unattended. This includes Mel-Temps, hot plates, and sand
baths. Before you leave either turn it off or ask a fellow student to keep an eye
on it in your absence.
Remember to record the experimental data and observations in your
lab notebook as you work. It is important to record observations and not just
hard data in your notebook. The laboratory is for laboratory work. Don’t take
the time to do other work, such as calculations and graphs, unless you need
the results before you go on. Do these things after lab or after you have
finished the things that must be done in lab. The general rule is to use your
laboratory time for those things that can be done only in the laboratory.
7. Clean Up
Be sure to start cleaning up with at least 10 minutes left in the lab
period. Clean your equipment and your work area. Place excess chemicals in
the appropriate waste container. Wash glassware first with soap and water. If
the glassware is still not clean, rinse with acetone. Many organic compounds
are not soluble in water but are soluble in acetone. Lock your locker. A few
lockers are found open every time we check. Do your cleanup assignment if it’s
your turn.
8. Notebook
Tear out the white pages from your notebook related to the experiment.
Staple multiple sheets together. Tear off rough edges. Be sure the pages have
your name and the section information. See the current syllabus or your
instructor for the specific requirement.
9. Sign out
After checking your equipment and locking your locker, sign out of lab.
10. 2230L or 2240L- Datasheet
Complete the datasheet and turn it in before leaving class. At times your
instructor may allow you to finish your datasheet outside of class and turn it in
at a later time, normally the following day.
10. 2240L- Lab Report
Prepare the laboratory report on the day’s experiment during the week. It
is much easier to write the report within a day or two of carrying out the
experiment rather than waiting until the night before it is due to start. The
report must be word processed (or typed). It may not be handwritten or handprinted. It is due at the very beginning of the next week’s lab; your lab
instructor will deduct points for late lab reports. Specific requirements for the
lab report may be found on-line, from your instructor and in the next chapter.
You must submit your lab report to Turnitin in order to receive a grade
for your lab report. Your instructor will provide details of how to submit papers
to Turnitin.
11. Post Experiment 2230L and 2240L
Prepare for the next quiz. Remember that you may be asked questions
on anything you should have learned from assigned readings, pre-experiment
lecture, or doing the experiment. Finally, go back to #1 above and start on the
next week's lab.
Organic Chemistry Glassware
It is each student’s responsibility to check their drawers at the beginning of
each class. Replace missing items from “Extra Glassware Cabinet” or if none is
available there, obtain replacement item from the stockroom (NCF 362).
Large size Glassware.
Thermometer (1)
Graduated Cylinder 10 mL (2)
Graduated Cylinder 100 mL (1)
Funnel, glass long or short (1)
Buchner Funnel (1)
Watch Glasses (2)
Scoopula (1)
Pipette Bulbs, rubber (2)
Test Tubes (12)
Stirring Rods, glass (3)
Erlenmeyer Flask 50 mL (2)
Erlenmeyer Flask 250 mL (2)
Filter (or suction) Flask 500 mL (1)
Separatory Funnel (1)
Beaker, 50 mL (2)
Beaker, 100 mL (2)
Beaker, 250 mL (1)
Beaker, 400 mL (1)
Beaker, 600 mL (2)
scoopula
separatory Erlenmeyer
funnel
flask
watch
glass
buchner
funnel
filter
flask
Microscale Kit Contents (red box).
A.
Adapter Connecting
$9.10
B
Filter Adapter
$0.72
C.
D.
E.
F.
G
H
I
J
Thermometer Adapter
Centrifuge Tube and Cap
Chromatography Column
One-way Stopcock
Connector only
Connector with support rod
Distillation Column
Distillation Head
$2.36
$1.51
N/C
$2.98
$3.48
$6.44
N/C
$9.30
Revised May 2, 2013 S. L. Weaver
K.
Short-neck Round Bottom
Flask
L. Long-neck Round Bottom
Flask
M. Erlenmeyer Flasks 10 mL (4)
N. Filter Flask (25 mL)
O. Hirsch Funnel with frit
P. Reaction Tubes (4)
Q. Spatula
R. Sleeve stopper/septum (2)
S Syringe ( 1 mL)
$9.50
$9.60
$3.24
$13.70
$1.72
$1.67
$7.70
$0.31
$0.55