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which is more reactive towards SN1 reaction and why? - Chemistry

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Out of , which is more reactive towards SN1 reaction and why?

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Solution

Since formation of carbocation is the rate-determining step in the SN1 reaction, the stability of carbocation would determine its reactivity.

The order of stability of carbocation is as follows:

Tertiary > Secondary > Primary >Methyl

Here, 1-chloro-1-methylpropane would form secondary carbocation, while 1-chloro-2-methylpropane will form primary carbocation, which is less stable than secondary carbocation. Hence, reactivity towards the SN1 reaction would be higher for 1-chloro-1-methylpropane.

Concept: Hydrocarbons: Alkanes - Reactions of Haloalkanes - Nucleophilic Substitution Reactions
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