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- Q2 Propose mechanisms for the following reactions. (a) (b) (c) (d) (e) Br HBr ROOR hv cat. H₂SO4 H₂O HBr > HCI EtOH cat. H₂SO4 H₂O Br OH Br xBr+ Br CI CH₂CH3 OH H H -OH Br CH₂CH3In a strongly acidic solution, cyclohexa-1,4-diene tautomerizes to cyclohexa-1,3-diene.Propose a mechanism for this rearrangement, and explain why it is energetically favorable.PPropose mechanism (showing explicity how observed mixtures of products are formed) cyclopenta-1,3-diene + Br2 ---> 3,4-dibromocyclopent-1-ene + 3,5-dibromocyclopent-1-ene