Sucrose has a specific rotation of +66.5° at 25° . A solution of an unknown pure substance in ethanol (c=4.62 g/10 mL) shows an observed rotation of +20.4°. Is it possible that the substance is sucrose? Recall that [α]=α/cl , where [α] is the specific rotation, α is the observed rotation, the path length, l , is 1 decimeter; and c is the concentration of the sample.

Question

Sucrose has a specific rotation of  +66.5° at  25° . A solution of an unknown pure substance in ethanol (c=4.62 g/10 mL) shows an observed rotation of  +20.4°. Is it possible that the substance is sucrose? Recall that  [α]=α/cl , where  [α] is the specific rotation, α  is the observed rotation, the path length,  l , is 1 decimeter; and c  is the concentration of the sample.

Quizplus · Accepted Answer

The Answer of Sucrose has a specific rotation of  +66.5° at  25° . A solution of an unknown pure substance in ethanol (c=4.62 g/10 mL) shows an observed rotation of  +20.4°. Is it possible that the substance is sucrose? Recall that  [α]=α/cl , where  [α] is the specific rotation, α  is the observed rotation, the path length,  l , is 1 decimeter; and c  is the concentration of the sample.

Sucrose Has a Specific Rotation of +66