10. How would your procedure change if you were to use dichloromethane as solvent instead of ethyl acetate?

Organic Chemistry
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ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Chapter21: Benzene And The Concept Of Aromaticity
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Could I get some help with question 10, please? The first image includes the procedure.
inces
Mailings
Aa A
PA-
Fy
estigate
Review View
E E
ME
Y
Biphenyl/Ethyl Acetate
1= -
Paragraph
Help
2 T
15
F
No Spacing
+ NaOH →
Heading 1
Ethyl Acetate
NH3 CI
10. How would your procedure change if you were to use dichloromethane as solvent instead of ethyl
acetate?
GE
Styles
HCI
layı
NA
11. Now draw a flowchart to represent the experiment that was completed in lab. Include the molecular
structures for any cations and/or anions formed in the experiment. You can find a sample flowchart
on Canvas under Module 4.
4-Nitroaniline/ Biphenyl
Aq
огд
Heading 2
+Nack:
Find
Repli
Sele
Editin
022-80
Transcribed Image Text:inces Mailings Aa A PA- Fy estigate Review View E E ME Y Biphenyl/Ethyl Acetate 1= - Paragraph Help 2 T 15 F No Spacing + NaOH → Heading 1 Ethyl Acetate NH3 CI 10. How would your procedure change if you were to use dichloromethane as solvent instead of ethyl acetate? GE Styles HCI layı NA 11. Now draw a flowchart to represent the experiment that was completed in lab. Include the molecular structures for any cations and/or anions formed in the experiment. You can find a sample flowchart on Canvas under Module 4. 4-Nitroaniline/ Biphenyl Aq огд Heading 2 +Nack: Find Repli Sele Editin 022-80
Page
1
Introduction
In this experiment, you will be separating a mixture of 4-nitroaniline and biphenyl by extraction.
Finally, you will identify and determine the purity of each compound. Usually, the extraction is used
as part of the 'work-up' after completing a chemical reaction. When part of a work-up, the product
could be isolated for other by-products of the reaction.
1
Experiment (Day 1)
Dissolve about 1.0 g of the 4-nitroaniline /biphenyl (1:1 by mass) mixture in 10 mL of ethyl acetate
in a 50 mL Erlenmeyer flask, and label this flask 1. Add 5 mL of 3 M aqueous hydrochloric acid (HCI)
to the flask (note what happens), mix well, then pour off the mixture into a separatory funnel. Mix
the contents thoroughly by shaking vigorously for about 2-3 min with periodic venting (your
instructor will demonstrate the correct technique for this). Allow the layers to separate completely,
then drain off the lower layer into a second 50 mL Erlenmeyer flask (labeled flask 2). Add another 5
mL of 3 M aqueous HCl solution to the separatory funnel, mix the contents as before, and drain off
the lower layer into flask 2. Exactly what chemical compound is present in flask 2?
Drain off the upper layer into a 50 mL Erlenmeyer flask (see below, under "biphenyl"), and label this
"flask 3". Return the contents of flask 2 into the separatory funnel, then add 2 mL of ethyl acetate and
mix it thoroughly. Drain off the lower layer back into flask 2, then discard the upper ethyl acetate
layer into the designated waste. This is called backwashing and serves to remove any organic
material that might contaminate the contents of flask 2.
ly
of 3
Transcribed Image Text:Page 1 Introduction In this experiment, you will be separating a mixture of 4-nitroaniline and biphenyl by extraction. Finally, you will identify and determine the purity of each compound. Usually, the extraction is used as part of the 'work-up' after completing a chemical reaction. When part of a work-up, the product could be isolated for other by-products of the reaction. 1 Experiment (Day 1) Dissolve about 1.0 g of the 4-nitroaniline /biphenyl (1:1 by mass) mixture in 10 mL of ethyl acetate in a 50 mL Erlenmeyer flask, and label this flask 1. Add 5 mL of 3 M aqueous hydrochloric acid (HCI) to the flask (note what happens), mix well, then pour off the mixture into a separatory funnel. Mix the contents thoroughly by shaking vigorously for about 2-3 min with periodic venting (your instructor will demonstrate the correct technique for this). Allow the layers to separate completely, then drain off the lower layer into a second 50 mL Erlenmeyer flask (labeled flask 2). Add another 5 mL of 3 M aqueous HCl solution to the separatory funnel, mix the contents as before, and drain off the lower layer into flask 2. Exactly what chemical compound is present in flask 2? Drain off the upper layer into a 50 mL Erlenmeyer flask (see below, under "biphenyl"), and label this "flask 3". Return the contents of flask 2 into the separatory funnel, then add 2 mL of ethyl acetate and mix it thoroughly. Drain off the lower layer back into flask 2, then discard the upper ethyl acetate layer into the designated waste. This is called backwashing and serves to remove any organic material that might contaminate the contents of flask 2. ly of 3
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