Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion In \[{{\text{S}}_{\text{N}}}\text{1}\]reaction on 2-bromobutane, product formed is a racemic mixture. Reason Carbocation is the intermediate of \[{{\text{S}}_{\text{N}}}\text{1}\] reaction.A) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C) If Assertion is true but Reason is false.
D) If both Assertion and Reason are false.
Correct Answer: A
Solution :
2-bromobutane is an optically active alkyl halide. When it undergoes \[{{\text{S}}_{\text{N}}}\text{1}\]reaction, the intermediate carbocation is formed which is planar species, therefore the attack of nucleophile can take place with equal ease from both the faces. Thus, the product formed is a racemic mixture (±) which is optically inactive. Hence, Reason is the correct explanation of Assertion.
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