Problem: If a pure R isomer has a specific rotation of -151.0°, and a sample contains 69.0% of the R isomer and 31.0% of its enantiomer, what is the observed specific rotation of the mixture?

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If a pure R isomer has a specific rotation of -151.0°, and a sample contains 69.0% of the R isomer and 31.0% of its enantiomer, what is the observed specific rotation of the mixture?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Enantiomeric Excess concept. You can view video lessons to learn Enantiomeric Excess. Or if you need more Enantiomeric Excess practice, you can also practice Enantiomeric Excess practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Choi's class at QC CUNY .