Podcast
Questions and Answers
Is (S)-carvone levorotatory or dextrorotatory?
Is (S)-carvone levorotatory or dextrorotatory?
- Dextrorotatory (correct)
- Both levorotatory and dextrorotatory
- Levorotatory
- Neither levorotatory nor dextrorotatory
Which enantiomer is in excess in the mixture?
Which enantiomer is in excess in the mixture?
- Both are present in equal amounts
- Neither enantiomer is in excess
- (R)-carvone (correct)
- (S)-carvone
Is the studied mixture a racemic mixture?
Is the studied mixture a racemic mixture?
- No, it contains more of one enantiomer (correct)
- Yes, but only at high concentrations
- Yes, it contains equal amounts of both enantiomers
- No, it contains no enantiomers
What is the specific rotation of a racemic mixture?
What is the specific rotation of a racemic mixture?
What is the percentage of (S)-carvone in the mixture if its specific rotation is +61° and the mixture has a specific rotation of -23°?
What is the percentage of (S)-carvone in the mixture if its specific rotation is +61° and the mixture has a specific rotation of -23°?
Flashcards
Is (S)-carvone levorotatory or dextrorotatory?
Is (S)-carvone levorotatory or dextrorotatory?
(S)-carvone is dextrorotatory, meaning it rotates plane-polarized light to the right (+).
Which enantiomer is in excess in the mixture?
Which enantiomer is in excess in the mixture?
The enantiomer in the mixture with a negative rotation (levorotatory) is in excess.
Is the studied mixture a racemic mixture?
Is the studied mixture a racemic mixture?
No, the mixture is not racemic. A racemic mixture has equal amounts of both enantiomers and no net rotation.
What is the formula to calculate the percentage of each enantiomer in the mixture?
What is the formula to calculate the percentage of each enantiomer in the mixture?
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What is the specific rotation of a substance?
What is the specific rotation of a substance?
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Study Notes
Optical Activity of (S)-Carvone
- The specific rotation of pure (S)-carvone is +61°
- A solution of (S)- and (R)-carvone has a specific rotation of −23°
Chiral Properties
- (S)-carvone is dextrorotatory
- The mixture is not racemic
Calculation of Excess Enantiomer
- Calculation of the percentage of each enantiomer requires further calculation. The provided information is insufficient to proceed with this.
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Description
Explore the fascinating world of optical activity through the study of (S)-carvone. This quiz delves into specific rotation, chiral properties, and enantiomer calculations. Test your understanding of these concepts in stereochemistry!
