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Q.30

Expert-verified
Organic Chemistry
Found in: Page 200

Short Answer

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%.

See the step by step solution

Step by Step Solution

Enantiomeric excess (ee)

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.

Formula to calculate the ee

The formula to calculate the ee is as follows:

.

Explanation

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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