During the course of a SN1reaction, the intermediate species formed is:
Correct answer: A. A carbocation
- A. A carbocation
- B. A free radical
- C. A carbanion
- D. An intermediate complex
Explanation
In the first step of an SN1 reaction, the halide atom of the alkyl halide is removed, and the carbon atom becomes sp2 hybridized. The halide ion is highly electronegative, and there is heterolytic bond breakage. It results in a positive charge on the C-atom and it becomes a carbocation.
Last updated
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.
Practise Alkyl Halides
458 free Alkyl Halides MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
50% inversion of configuration of molecules take place in a___________________?
A compound X undergoes the following reactions:X NaOH(aq)/heat > C4H10O Cr2O7(2-), H+(aq)/ heat> C4H8O.What is X?
A Grignard reagent is formed when an alkyl halide reacts with
A tertiary alkyl halide usually undergoes nucleophilic substitution by the SN1 mechanism because
Alkyl halides are considered to be very reactive compounds towards nucleophile because_________________?