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Magnitude of specific rotation of a comp...

Magnitude of specific rotation of a compound is independent of :

A

solvent

B

concentration

C

length of tube

D

temperature

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To solve the question regarding the magnitude of specific rotation of a compound and its independence from certain factors, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Specific Rotation**: - Specific rotation (\([α]\)) is defined as the observed rotation (\(α_{observed}\)) divided by the product of the path length (L) in decimeters and the concentration (C) in grams per milliliter. - The formula is given as: \[ [α] = \frac{α_{observed}}{L \times C} \] 2. **Identifying the Variables**: - From the formula, we can identify the variables: - \(α_{observed}\): The observed rotation of the compound. - \(L\): The path length of the solution (in decimeters). - \(C\): The concentration of the solution (in grams per milliliter). - Additionally, specific rotation is dependent on temperature and the wavelength of light used for measurement. 3. **Analyzing the Options**: - The question asks for the factor that the magnitude of specific rotation does not depend on. - The options typically include: - Temperature - Wavelength of light - Concentration - Solvent 4. **Determining Independence**: - Specific rotation is affected by temperature (as it can change the rotation of light) and wavelength (as different wavelengths can interact differently with chiral compounds). - It also depends on concentration and path length as seen in the formula. - However, specific rotation is independent of the solvent used. While the solvent can affect the overall optical activity and the observed rotation, the specific rotation itself (which normalizes these effects) remains constant for a given compound. 5. **Conclusion**: - Therefore, the magnitude of specific rotation of a compound is independent of the solvent. ### Final Answer: The magnitude of specific rotation of a compound is independent of the **solvent**. ---
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