Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Which type of organic reaction typically occurs more quickly due to its mechanism?
A
SN1 reaction
B
E2 reaction
C
E1 reaction
D
SN2 reaction
Verified step by step guidance
1
Understand the four types of reactions: SN1, SN2, E1, and E2. SN1 and E1 are unimolecular reactions, while SN2 and E2 are bimolecular reactions.
Recognize that SN2 reactions involve a single step where the nucleophile attacks the substrate at the same time as the leaving group departs, leading to a concerted mechanism.
Consider the factors affecting reaction speed: SN2 reactions are typically faster because they do not involve the formation of a carbocation intermediate, unlike SN1 and E1 reactions.
Note that SN2 reactions are favored in polar aprotic solvents and with strong nucleophiles, which enhance the reaction rate by stabilizing the transition state.
Conclude that due to the concerted mechanism and the absence of intermediate formation, SN2 reactions generally occur more quickly compared to SN1, E1, and E2 reactions.