Asked in PMC Practice Test 28 (2021) 2021Moderate

In SN2 reaction, rate of reaction is directly proportional to concentration of?

Correct answer: C. Both Options A and B are correct

  • A. Substrate
  • B. Nucleophile
  • C. Both Options A and B are correct
  • D. None of these options are correct

Explanation

In SN2 reactions, the rate of the reaction is directly proportional to the concentration of the nucleophile and the concentration of the substrate. This is because the SN2 reaction involves a bimolecular collision between the nucleophile and the substrate, so an increase in the concentration of either species will increase the likelihood of a successful collision and therefore increase the rate of the reaction.

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About Nucleophilic Substitution

Nucleophilic substitution replaces a leaving group in an alkyl halide when an electron-rich nucleophile attacks the carbon atom. The topic compares SN1 and SN2 mechanisms, including reaction conditions, substrate structure, solvent effects, nucleophile strength, carbocation formation and stereochemical changes, and distinguishes substitution from elimination.

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