Rate Law Sn1
SN1 rate law for tert-butyl bromide in aqueous ethanol depends on:
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More halogen organics Practice Questions
Which substrate reacts fastest via SN1 in aqueous ethanol?
Which substrate reacts fastest via SN1 in aqueous ethanol?
SN2 rate decreases in order:
SN2 rate decreases in order:
Benzylic bromides undergo SN1 faster than alkyl bromides due to:
Benzylic bromides undergo SN1 faster than alkyl bromides due to:
Chlorobenzene is less reactive than alkyl chloride in nucleophilic substitution because:
Chlorobenzene is less reactive than alkyl chloride in nucleophilic substitution because:
Sandmeyer reaction converts anilines to aryl bromides via intermediate:
Sandmeyer reaction converts anilines to aryl bromides via intermediate:
Strong bulky base (t-BuOK) acting on 2-bromobutane favors formation of:
Strong bulky base (t-BuOK) acting on 2-bromobutane favors formation of:
Wurtz reaction is less suitable for synthesis of unsymmetrical alkanes because:
Wurtz reaction is less suitable for synthesis of unsymmetrical alkanes because:
Carbylamine test gives foul smell indicating presence of:
Carbylamine test gives foul smell indicating presence of:
Formation of Grignard reagent fails in presence of:
Formation of Grignard reagent fails in presence of:
Elimination-addition (benzyne) mechanism is favored by treatment of chlorobenzene with:
Elimination-addition (benzyne) mechanism is favored by treatment of chlorobenzene with:
Best leaving group among given (in SN1):
Best leaving group among given (in SN1):
Chloroform stored with ethanol forms phosgene slowly; ethanol is added to:
Chloroform stored with ethanol forms phosgene slowly; ethanol is added to:
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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