Question

Match the following with their units when required to be substituted in the formula to find specific rotation.

• A. decimetre
• B. degree
• C. g/ml

Answer 1

Specific rotation can be found by the expression $\frac{\theta }{l\times c}$ where $\theta$ is optical rotation, $l$ is the length of sample and $c$ is the concentration of the sample. But the units that must be used for the above quatities are fixed. Units of optical rotation, length of sample and concentration must be degree, decimeter and gram per millilitre respectively.