The specific rotations of pure -D-glucopyranose and -D-glucopyranose are and , respectively. The spe — Biomolecules Chemistry Question

Question

The specific rotations of pure $\alpha$ -D-glucopyranose and $\beta$ -D-glucopyranose are $+110^\circ$ and $+19^\circ$, respectively. The specific rotation of their constant equilibrium mixture in water is $+52.7^\circ$. Calculate the approximate percentage of the $\beta$ -anomer present in the equilibrium mixture. (Round off to the nearest integer)