MHT CET Chemistry question
About a racemic mixture, some statements are given below: (i) It is a mixture of (d) and () isomers in equimolar proportion (ii) It is a mixture of two optical isomers in equal proportions by weights (iii) It may be laevo-rotatory or dextro-rotatroy (iv) It rotates the plane of polarization of light by equal angles on both the sides Among the following, the FALSE statements are
Answer: (C)
Solution
A racemic mixture contains equal amounts (moles and, since enantiomers have equal molar mass, also weights) of the d and l forms, so (i) and (ii) are true; the rotations cancel,
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