The specific rotation of optically pure (R)-sec-butyl alcohol is -13.52°.An optically pure sample of (R)-sec-butyl bromide was converted into the corresponding sec-butyl alcohol via an S_N2 reaction.What is the specific rotation of the product,assuming 100% yield? A)-13.52° B)between 0° and -13.52° C)between 0° and +13.52° D)+13.52° E)zero

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Quizplus · Accepted Answer

The S_N2 reaction involves inversion of configuration, so the product will have the opposite configuration and thus the opposite sign of specific rotation.

The Specific Rotation of Optically Pure (R)-Sec-Butyl Alcohol Is -13