Specific Rotation of Alpha and Beta -D-glucose

Nonfiction, Science & Nature, Science, Chemistry, Inorganic
Cover of the book Specific Rotation of Alpha and Beta -D-glucose by Homework Help Classof1, Classof1
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Author: Homework Help Classof1 ISBN: 1230000125440
Publisher: Classof1 Publication: April 17, 2013
Imprint: Language: English
Author: Homework Help Classof1
ISBN: 1230000125440
Publisher: Classof1
Publication: April 17, 2013
Imprint:
Language: English

"A freshly prepared solution of α-D-glucose shows a specific rotation of +112∘. Over time, the rotation of this solution decreases and reaches an equilibrium value of +52.5∘. In contrast, a freshly prepared solution of β-D-glucose has a specific rotation of +19∘. The rotation of this solution increases over time to the same equilibrium value of +52.5∘.
(a) Why do the specific rotations of the freshly prepared samples change over time, and why do they reach the same equilibrium value?
(b) Calculate the percentage of each anomer at equilibrium.
"

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"A freshly prepared solution of α-D-glucose shows a specific rotation of +112∘. Over time, the rotation of this solution decreases and reaches an equilibrium value of +52.5∘. In contrast, a freshly prepared solution of β-D-glucose has a specific rotation of +19∘. The rotation of this solution increases over time to the same equilibrium value of +52.5∘.
(a) Why do the specific rotations of the freshly prepared samples change over time, and why do they reach the same equilibrium value?
(b) Calculate the percentage of each anomer at equilibrium.
"

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