7. Circle the one more stable structure in each of the following pairs of molecules or ions: 8. Inspect the following molecules and label each as Z or E isomers if appropriate. 13 Daw ats Br t for the following Br 9. Write a reaction mechanism for the addition of hydrogen bromide to 3-methyl-1-butene. Show the carbocation formation and rearrangement leading to the major 3° alkyl bromide product Gly CH

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Chapter22: Organic And Biological Molecules
Section: Chapter Questions
Problem 65E
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7-9 please separate answers
CHE 231 Organic Chemistry
April 25, 2022
page 2
4. Draw as a polygon structure one of the following steroids:
Estradiol [Estr-1,3,5(10)-triene-3,17B-diol) or
Testosterone 17B-hydroxyandrost-4-ene-3-one
5. Fill in non-bonding electrons and draw the resonance forms using arrows on one structure to show
the movement of electrons in the following ions or molecules.
[a] he
[b]
chair fom of the e
6. Acid base reactions reach equilibrium almost instantly on mixing. Draw the conjugate acid and
conjugate base for the following a proton transfer reactions, and using the pKa values you are given,
circle the arrow in the direction that the equilibrium lies.
[a]
pka =4.7
[b] Ctz Qt zNHz
pka = 10,7
12
Two products for the following mc
7. Circle the one more stable structure in each of the following pairs of molecules or ions:
CHS
it
Cr
(H2
8. Inspect the following molecules and label each as Z or E isomers if appropriate.
13 Daw at3 or
duct for
Br
CH3
34-
9. Write a reaction mechanism for the addition of hydrogen bromide to 3-methyl-1-butene. Show the carbocation
formation and rearrangement leading to the major 3° alkyl bromide product
(6)
Transcribed Image Text:CHE 231 Organic Chemistry April 25, 2022 page 2 4. Draw as a polygon structure one of the following steroids: Estradiol [Estr-1,3,5(10)-triene-3,17B-diol) or Testosterone 17B-hydroxyandrost-4-ene-3-one 5. Fill in non-bonding electrons and draw the resonance forms using arrows on one structure to show the movement of electrons in the following ions or molecules. [a] he [b] chair fom of the e 6. Acid base reactions reach equilibrium almost instantly on mixing. Draw the conjugate acid and conjugate base for the following a proton transfer reactions, and using the pKa values you are given, circle the arrow in the direction that the equilibrium lies. [a] pka =4.7 [b] Ctz Qt zNHz pka = 10,7 12 Two products for the following mc 7. Circle the one more stable structure in each of the following pairs of molecules or ions: CHS it Cr (H2 8. Inspect the following molecules and label each as Z or E isomers if appropriate. 13 Daw at3 or duct for Br CH3 34- 9. Write a reaction mechanism for the addition of hydrogen bromide to 3-methyl-1-butene. Show the carbocation formation and rearrangement leading to the major 3° alkyl bromide product (6)
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