Electrophilic Addition 1 – Ethene + HBr
  H             H
                                               H    H
      C     C                             H    C    C     H
 H              H
         H+                                   Br   H
                            H    H
            _
        Br
                       H    C    C    H
                            +
                                 H
                            :Br_
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          Electrophilic Addition 2 – Ethene + Br (hexane)
                                                   2
  H               H                                H     H
       C     C                               H     C     C    H
 H                H
         Br+                                      Br   Br
                              H     H
             _
         Br
                         H    C     C     H
                               +
                                    Br
                              :Br_
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                                Electrophilic Addition 3 – Ethene + Br (aq)
                                                                                                                                                                   2
    H                                                   H                                                                                                         H                  H
                     C                  C                                                                                                        H                C                  C                  H
   H                                                    H
                            Br+                                                                                                                                  OH Br
                                                                                               H                  H
                                       _                                                                                                                                       HBr
                            Br
                                                                              H                C                  C                  H
                                                                                                 +
                                                                                                                  Br
                                                                                                :OH
                                                                                                            2
                                                                                                           _
                                                                                                 :Br                                                                           home
      Nucleophilic Addition – Reaction of HCN with Carbonyls
          _
        O                                      :OH
        C+                          HC         C      H
                             +         3
                            H
 HC           H
  3
                             _                  CN
            _              :O
         :CN
                  HC        C       H
                   3
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                            CN
       Nucleophilic Substitution – SN1 Mechanism
                                       CH                            CH3
         CH3                             3
           +                         C                      HC      C     CH
 HC      C     CH             H3C            CH3              3               3
   3              3                    +
            -                              -                         OH
                                       :OH
         Br
                                                                       :Br-
           Rate = k[C4H9Br]
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