ORGANIC CHEMISTRY LABORATORY CHEM 2521

1
ORGANIC CHEMISTRY LABORATORYCHEM 2521

• (before check in)

2
Teaching Assistante-mail _at_d.umn.eduOffice
hours (SSB 121)course pagehttp//www.d.umn.ed
u/vzhdanki/2521/
3
LABORATORY CHECK IN

• You must have a U Card with a balance of at least
  25 in your account before you are allowed to
  check into the lab.
• This will cover your purchase of goggles and
  hopefully any breakage that occurs during the
  semester.
• You will not be allowed to work in lab unless you
  are registered for the course and have checked
  into lab.

4
LABORATORY CHECK OUT

• You will check out of lab at end of semester
  during your lab section.
• Check out includes cleaning and accounting for
  the equipment in your drawer when you checked in.
• You must pay for any missing or broken equipment
  and turn in key.
• Failure to check out results in 45 charge which
  includes 20 for key.

5
SYLLABUS (Students follow along in their own
syllabus.)

• LABORATORY MATERIALS
• Macroscale and Microscale Organic Experiments 5th
  Edition by Williamson/ Minard/ Masters
• Safety Goggles
• Bound Laboratory Book

6
LAB MAKE-UP POLICY

• Lab may be made up during the week the experiment
  is missed or the following week.
• No exceptions to this policy.
• Student must see TA to schedule a make-up lab.
• This must be done at least 24 hours before a
  scheduled lab make-up.

7
LAB RULES

• All accidents medical problems must be reported
  to teaching assistant (TA).
• No one may work in lab without TA.
• You will be issued a drawer and are responsible
  for contents, key and any other equipment used.
• You will check out of lab at end of semester and
  must pay for broken or lost equipment and key.
• You must have a bound laboratory notebook
• You MUST wear fully enclosing goggles (no
  glasses). If you forget your goggles you can rent
  them from the stockroom, the 1st time is free, it
  is .50 after that
• Do not wear shorts, sandals, or nylon type pants.
  These offer little protection against chemicals
  in the event of an accident.
• Place bags, coats on shelves or designated
  areas.
• Do NOT eat or drink in the lab.
• Wash hands before you leave the lab. Especially
  before eating.

8
LAB RULES

• Safety, Safety, Safety
• Goggles must be worn at all times after pre-lab
  and before post-lab work.
• KEEP A CLEAN AND ORDERLY LAB. Points will be
  deducted from you and your partners lab grade if
  your hood is not left clean and picked up.

9
LAB NOTEBOOK

• Notebook musts
• Use a pen (NO PENCIL)
• Draw a single line through a mistake. Do not
  scribble or use whiteout
• Keep the notebook in column format.
• Write on one side of the page
• Make sure the procedure is completed before the
  lab starts. (this will be checked)

10
The Notebook Must Contain(follow lab syllabus)

• I. Title and date should be at the top of every
  lab.
• II. Reaction scheme should be below the title.
• III. Put the reference below the reaction scheme
  Williamson, Macroscale Microscale
  OrganicExperiments, pp. (fill in the page numbers
  used in the book!).
• IV. Lab partner(s)
• V. Procedure (MUST be written in your own
  words!)
• 1. Should take up 2/3 of the left side of the
  page.
• 2. You should be able to use this and not your
  book.
• 3. If the book tells you a figure to use, draw it
  in the lab notebook.
• VI. Observations (very important these can tell
  you if the reaction works or not)
• 1. Put to the right of the procedure, when it
  occurs.
• 2. Write down EVERYTHING you notice. Color
  changes, precip. formation, all
• weights, starting weight, end weights, boiling
  point, melting point, etc.
• 3. If you forget to put the lab changes in the
  procedure put them in the observations.
• 4. Do not write a paragraph of observations.

11
The Notebook Must Contain

• VII. Results (If you can put the data in tabular
  format do it, NO paragraphs)
• 1. Put starting and ending weights of starting
  material and product here.
• 2. Show all calculations used, i.e. theoretical
  yield and percent yield.
• 3. State melting points and boiling points here.
• VIII. Discussion (Tells if you understood the
  lab)
• 1. Do NOT rewrite the procedure here
• 2. Write in paragraph form.
• 3. Discuss about the results. Compare literature
  values with your experimental values.
• 4. Discuss yield. Is it low, high and why?
• 5. If something went wrong in the lab for you
  state what happened and why. Did you
• forget a step, etc?
• 6. If you were to repeat this lab what would you
  change?
• IX. You must have a table of contents and number
  each page! Do not rip out pages in the notebook!

12
The Notebook Must Contain
13
How are points taken off?

• 1. Not prepared for the lab.
• 2. Do not participate in the lab (have your
  partner do all of the work)
• 3. Poor laboratory skills.
• 4. Everything stated above you need. If it is
  minimal or not completed points will be taken
  away.
• 5. No unknown
• 6. Wrong unknown
• 8. Incorrect calculations or no calculations
  shown.
• Point values are the TAs decision.

14
NEXT

• A) Safety Video
• B) Check into lab
• C) Check-In
• 1. Find a partner and get drawer from TA
• 2. Go to stockroom and obtain drawer key.
• 3. Open drawer and make sure you have everything.
  If not, get it from the stockroom. If you dont
  have it at the end of the semester you will be
  charged for it.
• 4. When you have everything, keep the key and
  return the check-in slip to the stockroom.

15
(No Transcript)