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

Practice Questions

Q1
Which of the following is a characteristic of an S_N2 reaction?
  1. Involves a carbocation intermediate
  2. Bimolecular reaction rate
  3. Involves a strong base
  4. Occurs in a polar protic solvent

Questions & Step-by-Step Solutions

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.
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