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This seems to be true only because SN1 reactions prefer polar protic solvents which stabilize both the leaving group and the carbocation. But such solvents also surround strong nucleophile and hinder it from the carbocation. Weak nucleophiles on the other hand don't interact with protic solvents as much and thus stand a better chance of getting close to ...


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Consider the following assumptions to somehow force these substrates to proceed for $\ce{S_N1}$ reaction mechanism: Low temperature Polar protic solvent Low concentration of nucleophile w.r.t. reactant Now, in an $\ce{S_N1}$ reaction, the formation of carbocation is must. The primary factor that determines the reactivity of organic substrates in an $\ce{...


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