Specific Rotation?

Hi,

I had a question on my organic chemistry homework that looks like :

The specific rotation of d-carvone is +61°. Can you predict specific rotation for L-carvone?

I didn't even know how to approach the question, and was looking for some help.

Thank you!

2 Answers

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  • 1 month ago

    Roger the Mole's answer is correct. Enantiomers rotate light in the opposite direction to exactly the same extent. So, -61° would be the specific rotation for L-carvone.

  • 1 month ago

    Lacking any other information, I'd expect L-carvone to rotate the light in the opposite direction that D-carvone does, with the same magnitude.  So my guess at the answer is  −61°.

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