Racemic mixture
In Chemistry, a racemic mixture is a mixture in equal proportions of the enantiomers Lévogyre and Dextrogyre of a molecule Chirale.
The first identified racemic mixture as such was the Racemic acid that Louis Pasteur analyzed as being a mixture of two stereophony-isomers of the tartaric Acid , the sodium and ammonium Tartar.
The optical activity of its two components cancelling itself, a racemic mixture does not deviate the plan of polarization of the polarized light, it is optically inactive.
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