NEET Chemistry SN1 & SN2 Reactions MCQ Question
Which of the following statements about SN1 and SN2 reactions is correct?
SN1 reactions involve a two-step mechanism with the formation of a carbocation intermediate.
SN2 reactions are characterized by first-order kinetics and depend on the concentration of two reactants.
The order of reactivity for primary, secondary, and tertiary halides is the same in both SN1 and SN2 mechanisms.
SN2 reactions are faster in polar protic solvents compared to polar aprotic solvents.
Correct Answer
Detailed Explanation
SN1 reactions indeed involve a two-step mechanism where the first step is the slow cleavage of the C—Br bond to form a carbocation intermediate. In contrast, SN2 reactions occur in a single step and typically involve different factors influencing their rate, including solvent type.
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