The rate of SN1 reaction becomes doubled if _?
Correct answer: B. Concentration of substrate is doubled
- A. Concentration of nucleophile is doubled
- B. Concentration of substrate is doubled
- C. Concentration of substrate is tripled
- D. Concentration of substrate remains same
Explanation
The correct option is B. The rate of SN1 (Substitution Nucleophilic Unimolecular) reactions depends on the concentration of the substrate. In SN1 reactions, the rate-determining step involves the dissociation of the leaving group to form a carbocation intermediate. Increasing the concentration of the substrate enhances the likelihood of this step, leading to a higher reaction rate.
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About Alkyl Halides
Alkyl halides are named and related to their carbon-halogen structure, polarity and reactivity. The key reactions are nucleophilic substitution by SN1 and SN2 mechanisms and elimination by E1 and E2 mechanisms, including how substrate structure, nucleophile, base, solvent and temperature influence substitution versus elimination.
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