A Mixture of Two Enantiomers with a Composition of 65

question 68

Multiple Choice

A mixture of two enantiomers with a composition of 65.0% R has an observed rotation of -25.3° in a polarimeter tube. If the mixture has a concentration of 2.038 g/mL at 25°C, what is the predicted [α]²⁵D of an optically pure sample of the S enantiomer?

• A) -25.3°
• B) -53.5°
• C) +12.4°
• D) +41.3°
• E) +53.5°

---

Definitions:

Psychological Dysfunction

A disruption in emotional, cognitive, or behavioral functioning, often resulting from psychological, social, genetic, physiological, or environmental factors.

Societal Factors

Influences that stem from the societal environment in which an individual lives, including norms, laws, and social structures that affect behavior and outcomes.

Actively Hallucinating

Experiencing visual, auditory, or other sensory hallucinations while being awake and conscious.

Delusions

Firmly held false beliefs not supported by reality, common in conditions like schizophrenia.