A) 50%
B) \[\approx 100%\]
C) 36%
D) 64%
Correct Answer: D
Solution :
Ordinary glucose is a-glucose, with a fresh aqueous solution having specific rotation,\[{{[\alpha ]}_{D}}=+111{}^\circ \]. On keeping the solution for sometime, a-glucose slowly changes into an equilibrium mixture of \[\alpha \]-glucose (36%) and (\[\beta \]-glucose(64%) and the mixture has specific rotation \[+\text{ }52.5{}^\circ \].
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