What is the percentage of the S enantiomer in a sample of carvone that has a specific rotation of 10, given that the specific rotation of (R)-carvone is −61?

Question

Quizplus · Accepted Answer

The equation to calculate the percentage of S enantiomer in a sample of carvone with a specific rotation of 10 is:

% S enantiomer = (specific rotation of sample - specific rotation of (R)-carvone) / (specific rotation of (S)-carvone - specific rotation of (R)-carvone) * 100

Substituting the given values:

% S enantiomer = (10 - (-61)) / ((-120) - (-61)) * 100 = 42%

Therefore, the percentage of the S enantiomer in the sample of carvone is 42%. Choice A is the correct answer.

What Is the Percentage of the S Enantiomer in a Sample