Name:
CHML212
Exp. 18 The Grignard Reaction
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
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(In the provided space, write a brief purpose of the experiment, addressing all of the following points: )
Name the class of reactants combined during the synthesis and the class of product formed.
What is the purification technique used in this experiment?
What analytical technique will be used during the experiment?
What type of spectral analysis will be used to characterize the reactant and products?
2. Chemical Equation (In the provided space, draw the chemical equation for the synthesis of 2-methyl-2-hexanol 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
n-butyl bromide
Acetone
Magnesium turnings
Diethyl ether
Hydrochloric acid
Methanol
2-methyl-2-hexanol
MW (g/mol)
X
X
X
mp (oC)
X
X
X
X
X
X
X
bp (oC)
d (g/mL)
X
X
X
X
OSHA HAZARDS
X
X
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 the lab, Grignard reactions can be slow to initiate because of the magnesium metal turnings. This is because:
i. The magnesium is flammable.
ii. The magnesium is coiled too tightly.
iii. The magnesium reacts with air to form a magnesium oxide coating.
iv. The magnesium metal reacts with water.