What is the ee for each of the following mixtures of enantiomers A and B?
a. 95% A and 5% B
b. 85% A and 15% B
a. The ee is 90%.
b. The ee is 70%.
The enantiomeric excess determines the excess amount of any one of the enantiomers (either R or S). It is also termed an optically pure compound.
The formula to calculate the ee is as follows:
a. The ee is calculated from the A and B as:
Therefore, the ee for enantiomers is 90%.
b. The ee is calculated from the A and B as:
Therefore, the ee for enantiomers is 70%.
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