The specific rotation for pure R is +5.0, what percentage of the mixture is R when the observed roation is -2.0. b. The rotation for pure S=-100. What is the observed rotation of a mixture that is 20%S and 80%R? I need an easy way to solve these kinds of problem, please!!

The specific rotation for pure R is +5.0, what percentage of the mixture is R when the observed roation is -2.0. b. The rotation for pure S=-100. What is the observed rotation of a mixture that is 20%S and 80%R? I need an easy way to solve these kinds of problem, please!!

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter56: Carbohydrates

Section: Chapter Questions

Problem 7Q

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Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.

Question

a. The specific rotation for pure R is +5.0, what percentage of the mixture is R when the observed roation is -2.0.

b. The rotation for pure S=-100. What is the observed rotation of a mixture that is 20%S and 80%R?

I need an easy way to solve these kinds of problem, please!!

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