Chemistry - STEREO ISOMERISM Question with Solution | TestHub
ChemistrySTEREO ISOMERISMOPTICAL PURITY/ENANTIOMERIC EXCESS, POLARIMETER TUBE EXPERIMENTMedium2 minQB
ChemistryMediumnumerical
(+)-Lactic acid has a specific rotation of +13.5 deg. Calculate the specific rotation of a mixture of 75% (+)-lactic acid and 25% (-)-lactic acid.
Answer:
6.75
Solution:
Ans. 6.75 deg.
Sol. Enantiomeric excess = 75 - 25 = 50%. Observed specific rotation = ee x specific rotation of the pure enantiomer = 0.50 x 13.5 = +6.75 deg.
Stream:JEESubject:ChemistryTopic:STEREO ISOMERISMSubtopic:OPTICAL PURITY/ENANTIOMERIC EXCESS, POLARIMETER TUBE EXPERIMENT
⏱ 2mℹ️ Source: QB
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