A Pure Sample of the R Enantiomer of a Compound

question 92

Multiple Choice

A pure sample of the R enantiomer of a compound has a specific rotation, [α], 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?

• A) 33% R
• B) 33% S
• C) 50% R
• D) 75% R

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Definitions:

Nominalizations

The conversion of verbs into nouns, often used in legal and formal writing to create a sense of abstraction or authority.

Verbs

Words that describe actions, states, or occurrences in sentences.

Nouns

Words that name people, places, things, or ideas.

Marginal Cost Curve

A graphical representation showing how the marginal cost of production varies with the quantity of output produced.