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: \[{{S}_{N}}\text{l}\] reaction is basically a solvolysis reaction. Reason: Polar protic solvents help the substrate to ionise and by the way get involved in \[{{S}_{N}}\text{l}\] reaction.A) If both Assertion: and Reason: are true and the Reason: is the correct explanation of the Assertion:
B) If both Assertion: and Reason: are true but the Reason: is not the correct explanation of the Assertion:
C) If Assertion: is true but Reason: is false
D) If both Assertion: and Reason: are false
Correct Answer: A
Solution :
In \[{{S}_{N}}1\] reaction, first the substrate gets ionised and then, the nucleophile attacks at the cation. To ionise a substrate, presence of polar protic solvent is necessary, thus \[{{S}_{N}}1\] reactions are basically solvolysis reactions. Hence, Reason: is the correct explanation for Assertion:.
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