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Racemic mixture (±)
❑ It is a mixture of 2 enantiomers
with the same amount, each rotates
the plane-polarized light by the
same amount, but in the opposite
direction.
❑ Racemic mixtures are optically
inactive i.e. they cancel each other
and are denoted by (±).
99
Specific rotation ([α]D)
The amount of rotation
depends on:
sample concentration
sample path length
temperature
wavelength of the light
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