A reaction profile (not to scale!) for the reaction C₂H4 +HCI- >C₂H5Cl is shown below: E (kJ) C2H4 + HCI 10 70 This reaction is (exothermic, endothermic) 205 Reaction Coordinate The value of the activation energy for this reaction is C2H5CI kJ and the value of AE is kj.

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