CSIR NET| Numerical on Enantiomeric Excess| Optical Purity
Автор: Spectrum Classes
Загружено: 2021-06-21
Просмотров: 2906
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In this video two numerical problems has been discussed-
Q1-The [a]D of a 90% optically pure 2-arylpropanoic acid solution is +135°. On treatment with a base at RT for one hour, [a]D changed to +120°. The optical purity is reduced to 40% after 3 hours. If so, the optical purity of the solution after 1 hour, and its [a]D after 3 hours, respectively, would be-
Q2- Given that the rotation of -glucopyranose is +112.2°, the rotation of b-glucopyranose is +18.7°, and the rotation of an equilibrium mixture of the two anomers is +52.7°, calculate the percentage of each anomer present at equilibrium.
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