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Define specific rotation....

Define specific rotation.

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The correct Answer is:
Specific rotation is the number of degrees of rotation observed if a 1-dm (10-cm) tube is used and the compound has concentration `1gm//mL.` Thus specific rotation `[alpha]` is
`[alpha]_(t)^(lambda) = (theta)/(t xx c)`
Where, `[alpha]` = Specific rotation; `thetea` = observed angle of rotation (degree)
l = Pathlength (dm); C = concentration (gm/ml)
`lambda` = wavelength (nm); t = temperature `(25^(@)C)`
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