[Skip Breadcrumb Navigation]
:
[Skip Breadcrumb Navigation]
Home
Chapter 6: Isomers and Stereochemistry
Exercises
Practice Exercise 2
Practice Exercise 2
This activity contains 6 questions.
For a molecule with two chirality centers that has a stereoisomer that is a meso compound, how many stereoisomers does it have?
one stereoisomer: the meso compound
two stereoisomers: the meso compound and its enantiomer
three stereoisomers: the meso compound and a pair of enantiomers
four stereoisomers: two pairs of diastereomers
five stereoisomers: two pairs of enantiomers and one meso compound
What strategy would you use to separate a mixture of enantiomers of an amine?
use a racemic carboxylic acid to make diastereomeric salts
react with an enantiomerically pure amine to make diastereomeric salts
distill them
react with an enantiomerically pure carboxylic acid to make diastereomeric salts
use an enantiomerically pure carboxylic acid to make racemic salts
Which of the following is a true statement?
Addition of bromine to
cis
-2-butene forms the erythro pair of enantiomers.
Addition of bromine to
trans
-2-butene forms one stereoisomer.
Cyclohexane exists only in the cis form.
Four stereoisomers are obtained from the reaction of HBr with
cis
-2-butene.
For a molecule with
n
chirality centers, what is the maximum number of stereoisomers?
2
n
to the power of 2
2 to the power of
n
n
to the power of 2
2
n
2 to the power of 2
n
cis
-1,2-Dibromocyclohexane is a meso compound even though its chair conformation does
not
have a plane of symmetry. Can you explain why this compound is optically inactive?
cis
-1,2-Dibromocyclohexane is special in that it has a planar six-membered ring.
cis
-1,2-Dibromocyclohexane is not chiral because there are no chirality centers.
It is in equilibrium with the trans isomer.
The boat conformation has a plane of symmetry.
cis
-1,2-Dibromocyclohexane is chiral but happens to have a specific rotation of zero.
Which pair of stereoisomers is a pair of diastereomers?
(
R,S,R
) and (
S,R,S
)
(
R,R,S
) and (
S,S,R
)
(
S,S,R
) and (
R,S,R
)
(
R,R,R
) and (
S,S,S
)
(
S,R,R
) and (
R,S,S
)
The Clear Answers feature requires scripting to function. Your browser either does not support scripting or you have turned scripting off. So, the Clear Answers feature will not work. Note that you do not need to use the Clear Answers feature in order to use this site. You can change your answers for each question individually.
Your browser either does not support scripting or you have turned scripting off. Because of this, the answer choices will NOT appear in a different order each time the page is loaded, though that is mentioned below. Note that you do not need this feature to use this site.
Answer choices in this exercise appear in a different order each time the page
is loaded.
Copyright © 1995 - 2021
Pearson Education
. All rights reserved. Pearson Prentice Hall is an imprint of
Pearson
.
Legal Notice
|
Privacy Policy
|
Permissions
[Return to the Top of this Page]
: return
