Rate Law Sn1
Easychemistry
SN1 rate law for tert-butyl bromide in aqueous ethanol depends on:
Select the correct option:
Solution
Incorrect! Answer:
[Substrate] only
- SN1 Definition: Substitution Nucleophilic Unimolecular.
- Steps:
- Step 1 (Slow): R−Br→R++Br− (Ionization).
- Step 2 (Fast): R++Nu−→R−Nu.
- Rate Determining Step (RDS): The overall reaction rate is limited by the slowest step (Step 1).
- Unimolecularity: Only the alkyl halide (substrate) is involved in Step 1. The nucleophile is not involved until the fast second step.
- Kinetics: Rate = k[Substrate]. The rate is independent of the nucleophile's concentration or strength.
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About This Question
- Subject
- chemistry
- Chapter
- halogen organics
- Topic
- rate law sn1
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
[Substrate] only
- SN1 Definition: Substitution Nucleophilic Unimolecular.
- Steps:
- Step 1 (Slow): R−Br→R++Br− (Ionization).
- Step 2 (Fast): R++Nu−→R−Nu.
- Rate Determining Step (RDS): The overall reaction rate is limited by the slowest step (Step 1).
- Unimolecularity: Only the alkyl halide (substrate) is involved in Step 1. The nucleophile is not involved until the fast second step.
- Kinetics: Rate = k[Substrate]. The rate is independent of the nucleophile's concentration or strength.
This easy difficulty chemistry question is from the chapter halogen organics, covering the topic of rate law sn1. It appeared in the 2025 exam.
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