Interpretation:
The percent of each enantiomer in the given solution has to be calculated.
Concept introduction:
The pair of Enantiomers has different configurations.
Pair of enantiomers has different optical activity, which means if one will show levorotatory then the other will show dextrorotatory.
The direction and magnitude of rotation of plane-polarized light by an optically compound is measured by using polarimeter.
This rotation of polarized light is specific for a compound at specified temperature and wavelength, so it is called as Specific rotation of that compound.
The specific rotation of enantiomers has equal magnitudes and opposite signs.
Specific rotation of compound is calculated by,
If the mixture contain unequal amount of enantiomers of a compound, then the amount of excess of enantiomer is called enantiomeric excess or optical purity. It is calculated by,
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Chapter 4 Solutions
Organic Chemistry (8th Edition)
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- 三三 Determine the R/S configuration of the chirality center in following compounds ( only two of three).arrow_forwarda)Name this molecule. Draw another stereoisomer, labelling each chiral atom with the proper descriptor (R or S). b) What is the stereochemical relationship between 2a and the one you drew? c) If the optical rotation of the S,S isomer is +15.1°, what is the optical rotation of the stereoisomer you drew? d) Can this molecule and the isomer you drew be separated by distillation? Explain why, or why not.arrow_forwardIf a mixture has an ee of 90%, what is the percentage of each enantiomer? Multiple Choice 80% : 20% 55% : 45% 95% : 5% 65% : 35%arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning