(+)-menthol has a specific rotation of +50°. A mixture of (+)-menthol and (-)-menthol in a certain synthetic sample was analyzed as follows. 6.972 g of sample was dissolved to make a 25 mL solution, and then placed in a 10 cm tube. The optical rotation of the solution was -10⁰. What is the enantiomeric excess of the mixture? Report your answer to the correct number of significant figures. % ee Which enantiomer (+ or -) corresponds to the major enantiomer present? )-menthol What are the percentages of each enantiomer in the mixture? Report your answer to the correct number of significant figures. % (+)-menthol % (-)-menthol

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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(+)-menthol has a specific rotation of +50°. A
mixture of (+)-menthol and (-)-menthol in a
certain synthetic sample was analyzed as
follows. 6.972 g of sample was dissolved to
make a 25 mL solution, and then placed in a
10 cm tube. The optical rotation of the
solution was -10°.
What is the enantiomeric excess of the
mixture? Report your answer to the correct
number of significant figures.
% ee
Which enantiomer (+ or -) corresponds to the
major enantiomer present?
)-menthol
What are the percentages of each
enantiomer in the mixture? Report your
answer to the correct number of significant
figures.
% (+)-menthol
% (-)-menthol
Transcribed Image Text:(+)-menthol has a specific rotation of +50°. A mixture of (+)-menthol and (-)-menthol in a certain synthetic sample was analyzed as follows. 6.972 g of sample was dissolved to make a 25 mL solution, and then placed in a 10 cm tube. The optical rotation of the solution was -10°. What is the enantiomeric excess of the mixture? Report your answer to the correct number of significant figures. % ee Which enantiomer (+ or -) corresponds to the major enantiomer present? )-menthol What are the percentages of each enantiomer in the mixture? Report your answer to the correct number of significant figures. % (+)-menthol % (-)-menthol
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