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In an aqueous solutions of D-glucose all...

In an aqueous solutions of D-glucose all the following cyclic forms, besides the open-chain forms, are present in equibrium. Which of these forms is the stable and predominant at equilibrium condition?

A

`beta-D-` Glucofuranose

B

`alpha-D-` Glucofuranose

C

`beta-D-` Glucopyranose

D

`alpha-D` Glucopyranose

Text Solution

Verified by Experts

The correct Answer is:
C
Rapid inter conversion of `alpha-D` glucose and `beta-D` glucose in solution is known as mutarotation. `beta -D-` glucopyranose is the most stable form because all ring substituents in the chair Conformation are equatorial.
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