SN1 & SN2 Reaction

                              SN1

👉      1.  substitution nucleophilic unimolecular.  

👉      2. Two step process

             1st step =  carbocation intermediate formed in step 1.[stable]

             2nd step = nucleophilic attack, left and right in carbocation 

👉     3. * 1st step =slow

               *2nd step=fast

👉     4. Racemic mixture form in  SN1  reactoin .[50-50%]

👉     5. Rate= k1 [substate]

       Ex=   

                                         SN2

 👉   1.Substitution     nucleophilic bimolecular.

👉    2.One-step reaction.

                *  Transition state forms.

👉   3. Fast reaction in SN2  reaction . 

👉    4.  100% inversion mixture in SN2.

👉    5. Rate=k [Nu][R-LG].

Ex    

 

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