25Pure enantiomeric (R)-2-pentanol (structure shown) has a [a]p = -13.0°.онa) 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 inexcess?25c) what is the % enantiomeric excess in this sample?d) what is the composition of the sample ine) the density of 2-pentanol is 0.81 g/mL. What experimental rotation, ameas, will be measured in thepolarimeter if a sample of pure (S)-2-pentanol is examined in a 0.25 dm cell? (sign?).%ee(R),(S)?

Specific rotation of the pure R - 2-pentanol enantiomer has equal and opposite rotation of the…

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 25 +6.5°, which enantiomer, R or S, is in excess? c) what is the % enantiomeric excess in this sample? %ee 0L (S) 2

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 25 +6.5°, which enantiomer, R or S, is in excess? c) what is the % enantiomeric excess in this sample? %ee 0L (S) 2

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.

Question

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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