Name:
CHML212
Exp. 15 Substituent Effects on Electrophilic Aromatic Substitution
Tech
Pre
In
Post
Max
10
20
20
50
Score
Total Grade
PRE-LAB ASSIGNMENT: (EACH STUDENT will complete, print, and submit a copy at the beginning of the lab period.
Without a complete pre-lab assignment, you will not be allowed to perform the experiment, and will receive a zero
for the lab.) …..max score = 20 pts.
1.
Objective (In the provided space, write a brief purpose of the experiment, addressing all of the following points)
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

Name the class of reactants combined during the synthesis and the class of product formed.
What information will be gathered during the experiment, and for what reason?
What is the purification and what analytical technique will be used during the experiment?
2. Chemical Equation (In the provided space, draw the chemical equation for bromination of a generic monosubstituted aromatic ring using actual
chemical structures.)
3. Physical Data (Complete the following table using MSDS sheets from the following link:
http://www.sigmaaldrich.com/united-states.html. Copy all
of the OSHA hazards using the hazard codes provided.)
Compound
Ethyl benzene
Anisole
Acetanilide
Phenol
Benzaldehyde
Nitrobenzene
Acetic acid
Bromine
Ethyl acetate
hexane
OSHA HAZARDS
4. Experimental Outline (In the space provided, give a brief description of the procedure that will be followed in this experiment in 10 lines or less.)
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5. Pre-Lab Question (Answer the following question prior to lab.)
a.
In a separatory funnel containing ethyl acetate and 10% aqueous sodium bicarbonate (NaHCO3), which layer
would contain the brominated aromatic compound?
i. Top layer
ii. Bottom layer