89.5 Arrhenius equation 9.5.7 Activation energy of a overall reaction? ,3 a: 4 E 2 E Activation energy for elementary reaction Activation energies for overall reaction A combination of the activation energy of elementary reactions composing of the overall reaction. apparent activation energy The activation energy of ammonia synthesis.Activation energy for elementary reaction Activation energies for overall reaction: A combination of the activation energy of elementary reactions composing of the overall reaction. apparent activation energy 9.5.7 Activation energy of a overall reaction? Ea,1 Ea,2 Ea,3 Ea,4 Ea,5 Ea,6 The activation energy of ammonia synthesis. §9.5 Arrhenius equation