在平衡处确定每个异构体的百分比

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参考号:EM1317286

α和β -D-葡萄糖的特异性旋转。

新鲜准备的α-D-葡萄糖溶液显示+112的特定旋转∘。Over time, the rotation of this solution decreases and reaches an equilibrium value of +52.5∘。相反,新鲜制备的β-D-葡萄糖溶液具有+19的特异性旋转∘。The rotation of this solution increases over time to the same equilibrium value of +52.5∘

(a)为什么新鲜准备的样品的特定旋转会随时间变化,为什么它们达到相同的平衡值?

(b) Calculate the percentage of each anomer at equilibrium.

参考号:EM1317286

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