2. A sample of naproxen (the (S)-enantiomer is the active ingredient in Alleve) was found to have an optical rotation of +45.5°. If the optical rotation of pure (R)-naproxen is -66°, what is the percent enantiomeric excess of the naproxen sample? What percent of the sample is (R) and what percent (S)?

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Organic Chemistry Polarimetry question

2. A sample of naproxen (the (S)-enantiomer is the active ingredient in Alleve) was found to have
an optical rotation of +45.5°. If the optical rotation of pure (R)-naproxen is -66°, what is the percent
enantiomeric excess of the naproxen sample? What percent of the sample is (R) and what percent
(S)?
Transcribed Image Text:2. A sample of naproxen (the (S)-enantiomer is the active ingredient in Alleve) was found to have an optical rotation of +45.5°. If the optical rotation of pure (R)-naproxen is -66°, what is the percent enantiomeric excess of the naproxen sample? What percent of the sample is (R) and what percent (S)?
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