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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Pure enantiomeric (R)-2-pentanol (structure shown) has a [a]p = -13.0°.
он
a) what is the specific rotation of pure (S)-2-pentanol?
b) a sample of 2-pentanol gives [a]D= +6.5°, which enantiomer, R or S, is in
excess?
25
c) what is the % enantiomeric excess in this sample?
d) what is the composition of the sample in
e) the density of 2-pentanol is 0.81 g/mL. What experimental rotation, ameas, will be measured in the
polarimeter if a sample of pure (S)-2-pentanol is examined in a 0.25 dm cell? (sign?).
%ee
(R),
(S)?](https://content.bartleby.com/qna-images/question/053a7dd4-6035-4ca1-b497-47ec6b123526/71a8fe71-3653-4d2b-82c5-c3fd8e35cf62/7l934et_thumbnail.jpeg)
Transcribed Image Text:25
Pure enantiomeric (R)-2-pentanol (structure shown) has a [a]p = -13.0°.
он
a) what is the specific rotation of pure (S)-2-pentanol?
b) a sample of 2-pentanol gives [a]D= +6.5°, which enantiomer, R or S, is in
excess?
25
c) what is the % enantiomeric excess in this sample?
d) what is the composition of the sample in
e) the density of 2-pentanol is 0.81 g/mL. What experimental rotation, ameas, will be measured in the
polarimeter if a sample of pure (S)-2-pentanol is examined in a 0.25 dm cell? (sign?).
%ee
(R),
(S)?
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