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  • Which of the following compounds will give a racemic mixture on nucleophilic substitution by OH ion?

Which of the following compounds will give a racemic mixture on nucleophilic substitution by OH^{-} ion?

(i) (a)

(ii) (a), (b), (c)

(iii) (b), (c)

(iv) (a), (c)

Answers (1)

Compounds that undergo nucleophilic substitution by an ion and contain at least one chiral carbon will give a racemic mixture. A chiral carbon is a carbon atom that is attached to four different types of particles or groups of atoms. A racemic mixture is a combination of equal amounts of two enantiomers, which are substances with identical subatomic design. A racemic mixture is also known as a racemate. It has zero optical rotation because the rotation due to one isomer cancels out the rotation due to the other isomer. 

As the alkyl halide in it contains asymmetric carbon, therefore, a mixture of an enantiomer is formed during the S_N1 reaction.

Hence, the answer is the option (a).

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infoexpert21

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