Chemistry · Alkyl Halides and Amines
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SN1 reactions have which of the following species formed and consumed in the reaction?
- A
Transition state
- B
Intermediate
- C
Carbanion
- D
Carbene
Option B is correct since SN1 reactions involve two steps and in the first step, carbonium ion form is positive. This carbonium ion is used in the second step. Therefore, it serves as an intermediate.
Option A is incorrect since a transition state is a feature of the SN2 mechanism, not SN1.
Option C is incorrect since carbanion (negative) is not formed in an SN1 reaction, it is the carbonium ion positive which is formed.
Option D is incorrect since carbene is not formed in the SN1 reaction. A carbene is a molecule containing a neutral carbon atom with a valency of two and two unshared valence electrons.
Transition state is formed in SN2 reactions. Thus, this option is incorrect.
SN1 reactions involve two steps and in the first step, carbonium ion form is positive. This carbonium ion is used in the second step. Therefore, it serves as an intermediate.
Option C is incorrect since carbanion (negative) is not formed in an SN1 reaction, it is the carbonium ion positive which is formed.
Option D is incorrect since carbene is not formed in the SN1 reaction. A carbene is a molecule containing a neutral carbon atom with a valency of two and two unshared valence electrons.
Tagged under Chemistry · Alkyl Halides and Amines · 2021