A pure sample of the amino acid (S)-phenylalanine has a specific rotation of +70°. A mixture of the two enantiomers of phenylalanine (S and R) has a specific rotation of -17.5°. What is the enantiomeric excess?

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A pure sample of the amino acid (S)-phenylalanine has a specific rotation of

+70°. A mixture of the two enantiomers of phenylalanine (S and R) has a specific rotation of -17.5°. What is the enantiomeric excess?

 

A.

B.

C.

D.

 

asked Jun 29, 2014 in Organic Chemistry by Piaso2245 (-45 points)
    

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