Question

What is the specific rotation of pure (S)-carvone if a sample of (R)-carvone of 85?

1) - 61
2) 64
3) 0
4) 61

Answer 1

The specific rotation of pure (S)-carvone would be -85, which has the inverse sign to its enantiomer (R)-carvone with a specific rotation of +85. The correct answer is not provided in the question's options.

Step-by-step explanation:

The question pertains to specific rotation, a characteristic physical property of chiral compounds that denotes the degree to which a given compound can rotate plane-polarized light. The specific rotation of an enantiomerically pure substance is constant and has an inverse sign compared to its mirror image. Since the sample of (R)-carvone has a specific rotation of +85, its enantiomer, which is (S)-carvone, would have the specific rotation of -85. Therefore, the correct answer is not listed among the given options as all are incorrect.