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University at Buffalo Organic Chemistry Lab CHE 205 & 251 Fall 2023
Dr. K. Ahsan
Take home Pre-lab Procedure # 8 (Lab 8):
SN1 Reaction (3 points)-
Complete and upload
as
“Pre-Lab Assignment -Synthesis of Alkyl Halides - To Download” on
Labflow.
Before your
recitation start time
Name:
TA:
Lab Day & time:
Answer the following questions on this sheet using words, chemical structures and reaction
equations as required.
1)
Using chemical structures draw the complete chemical reaction mechanism of the
reaction of 2 methyl 2 butanol with HCl, provide all the products and any intermediates
involved
(1.0 point)
2)
For reaction drawn above, what is the
theoretical yield
if you started with 1.5 mL of 2
methyl 2 butanol (MW = 88.15 g/mol; density = 0.805 g/mL) and
excess
HCl to produce the
product (MW= 106.59.15 g/mol)? .
1.0 point
Theoretical yield = (1.5/0.805) x 106.59 = 198.61 g
3) Using your own words, provide the procedure for the synthesis of 2-chloro-2-methylbutane via an SN1
Reaction. 1.0 point
In the synthesis of 2-chloro-2-methylbutane through an SN1 reaction, 1.5 mL of 2-methyl-2-
butanol is mixed with 2.5 mL of concentrated 12M hydrochloric acid in a conical vial equipped
with a magnetic spin vane. After stirring for 10-15 minutes, the reaction mixture is transferred to
a centrifuge tube, and the organic layer is extracted with diethyl ether. The resulting solution is
treated with saturated sodium bicarbonate, and the layers are separated. The organic layer is
then dried with anhydrous sodium sulfate, and the solvent is evaporated. The mass of the
product is obtained, and its identity is confirmed by a silver nitrate test, which results in the
formation of a white precipitate. Safety precautions include the use of protective gear and
working in a fume hood due to the corrosive nature of hydrochloric acid and chlorinated
hydrocarbons. Cleanup involves proper disposal of waste and cleaning the work area.
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[References]
Use the References to access important values if needed for this question.
CO (g) + Br2 (g)
→COBR2(g)
Which of the following could be a way to increase the rate of the reaction indicated above?
Indicate "yes" or "no" for each choice.
Increasing the temperature.
Doubling the pressure.
Increasing the concentration of CO.
Increasing the concentration of Br2.
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1
O PRINCIPLES OF ORGANIC CHEMISTRY
Classifying organic reactions
The following chemical equation is for an elimination reaction, where the important atoms, groups, and bonds involved have been highlighted for you:
Explanation
O.
-H
2
Use the information provided to predict the missing organic product and draw its structure in the drawing area below. Make sure to use the same skeletal
("line") style for the structure as the rest of the equation.
Check
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SCH4U Unit 4 Organic Chemistry
19. Name the following (8)
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HW - ORG CHEM please illustrate answer onto image
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O NAMING AND DRAWING ORGANIC MOLECULES
Identifying organic functional groups
compound
CH₂
|
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Explanation
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What is the missing reactant in this organic reaction?
S.
ORGANIC FUNCTIONAL GROUPS
Predicting the reactants or products of alcohol oxidation
[0]
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D21. English 1102 Essay One Rubric CG - English Compositio...
No Answer
Explanation
Specifically, in the drawing area below draw the skeletal ("line") structure of R.
If there is no reasonable possibility for R, check the No answer box under the drawing area.
+ H₂O
Click and drag to start drawing a
structure.
Check
www-awu.aleks.com
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=
O PRINCIPLES OF ORGANIC CHEMISTRY
Identifying rigid parts of an acyclic organic molecule
In the actual molecule of which this is a Lewis structure, which of the labeled distances can change?
H
marked
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H
B
C
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A
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unmarked
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List all the distances that can change. For example, suppose all the distances were measured at a certain time, and again 0.1s later. If distance A might
be 50% bigger or smaller the second time, but all the other distances are certain to be the same, you should write "A". If A and B might be different
the second time, but no other distances, you would write "A, B". And so on.
Note for advanced students: you can assume the molecule is dissolved in an appropriate solvent at room temperature.
X
0/5
You can click the "unmarked" tab to see the molecule without any of the distances marked.
S
Jacari V
18 CO
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|||
O ORGANIC FUNCTIONAL GROUPS
Predicting the products of symmetric alcohol dehydration
Predict the missing product of this organic reaction:
H+
A
OH
planation
+ H₂O
Specifically, in the drawing area below draw the skeletal ("line") structure of P.
Click and drag to start drawing a
structure.
Check
www-awu.alek
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Help
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My Citation Lists | E...
Solved: Chapter 12... B
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Which has the highest boiling point?
Multiple Choice
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diesel fuel (composed mostly of C15H32-C18H38)
gasoline (composed mostly of C5H12-C12H26)
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Jict the product of the following organic reaction:
CH2-07
CH-O
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O ORGANIC FUNCTIONAL GROUPS
Naming and drawing ketones
Write the systematic name of each organic molecule:
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Q2/ Attend the
following vehicles
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from 2-chloro-2-methylbutane
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Please help with Organic Chemistry question. Thank you
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Please help me abt this science, due is coming and i don't understand a thing.
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Write the systematic name of each organic molecule:
CH3
structure
OH OH
| |
CH-CH-CH - CH3
OH
OH
|
HỌ—CH2–CH–CH2–CH2 -CH₂ OH
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CH3 - CH₂ CH-CH₂CH3
name
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