The specific optical rotations of the pure a- and B-pyranose forms of a compound are +30.1° and -16.3°, respectively. When either form is dissolved in water, mutorotation occurs, and the observed rotation of the solution changes until a final rotation of +15.4° is observed. Assuming that only a- and -pyranose forms of this compound are present, calculate the percent of each isomer at equilibrium.

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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The specific optical rotations of the pure a- and B-pyranose forms of a compound are +30.1° and
−16.3°, respectively. When either form is dissolved in water, mutorotation occurs, and the observed
rotation of the solution changes until a final rotation of +15.4° is observed. Assuming that only a- and B
-pyranose forms of this compound are present, calculate the percent of each isomer at equilibrium.
Percent a isomer: 66.09X
Percent ß isomer: 33.91 X
Transcribed Image Text:The specific optical rotations of the pure a- and B-pyranose forms of a compound are +30.1° and −16.3°, respectively. When either form is dissolved in water, mutorotation occurs, and the observed rotation of the solution changes until a final rotation of +15.4° is observed. Assuming that only a- and B -pyranose forms of this compound are present, calculate the percent of each isomer at equilibrium. Percent a isomer: 66.09X Percent ß isomer: 33.91 X
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