Which of the following is a characteristic of an S_N2 reaction?

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Question: Which of the following is a characteristic of an S_N2 reaction?

Options:

Correct Answer: Bimolecular reaction rate

Solution:

S_N2 reactions are bimolecular and involve a direct attack by the nucleophile, leading to a concerted mechanism without a carbocation.

Which of the following is a characteristic of an S_N2 reaction?

Which of the following is a characteristic of an S_N2 reaction?

Step 1: Understand that S_N2 stands for 'Substitution Nucleophilic Bimolecular'.
Step 2: Recognize that 'bimolecular' means that two molecules are involved in the reaction at the same time.
Step 3: Identify that in an S_N2 reaction, a nucleophile (a species that donates an electron pair) attacks the substrate directly.
Step 4: Note that this attack happens in one step, which is called a 'concerted mechanism'.
Step 5: Understand that there is no formation of a carbocation (a positively charged carbon ion) during this process.

No concepts available.