23. a)The observed rotation for a solution containing the R and Senetaiomers a of a sample was +17.6. An enantiomerically pure sample of the S enantiomer has a specific rotation of +22.3°. What is the % enantiomeric excess of sample A? b)A pure sample of the R-enantiomer of a compound has a specific rotation of -15°. A solution containing 0.6 g/mL of a mixture of enantiomers rotates plane polarized light by -3° in a 1 dm polarimeter. What is the enantiomeric excess (%ee) of the mixture?

23. a)The observed rotation for a solution containing the R and Senetaiomers a of a sample was +17.6. An enantiomerically pure sample of the S enantiomer has a specific rotation of +22.3°. What is the % enantiomeric excess of sample A? b)A pure sample of the R-enantiomer of a compound has a specific rotation of -15°. A solution containing 0.6 g/mL of a mixture of enantiomers rotates plane polarized light by -3° in a 1 dm polarimeter. What is the enantiomeric excess (%ee) of the mixture?

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter5: Stereochemistry At Tetrahedral Centers

Section5.SE: Something Extra

Problem 54AP

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