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Energetics of the SN1 reaction

                                             δ- δ+

         Characteristics of SN1 reaction

✓ An SN1 reaction is a two-step reaction.

✓ Rate of the reaction depends only on the
  concentration of the alkyl halide (First-order
  reaction).
            Reaction rate = k [alkyl halide]

✓ The rate determining step (slow) involves
  formation of the carbocation.

✓ The SN1 reaction is nonstereospecific reaction.

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