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  4. The specific rotation of equilibrium mixture of α - D-glucose and β - D-glucose, is:

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Q. The specific rotation of equilibrium mixture of $ \alpha - $ D-glucose and $ \beta - $ D-glucose, is:

MGIMS WardhaMGIMS Wardha 2003

Solution:

The specific rotation of $ \text{ }\!\!\alpha\!\!\text{ -D-} $ glucose is $ +113{}^\circ $ and that of $ \text{ }\!\!\beta\!\!\text{ -D-} $ glucose is $ +19{}^\circ $ . The specific rotation of their mixture, in equilibrium, is $ +52{}^\circ $ .