Question: The gas-phase reaction CI(g) + HBr(g) HCI(g) + Br(g) has an overall enthalpy change of - 66 kJ. The activation energy for the reaction

The gas-phase reaction CI(g) + HBr(g) → HCI(g) + Br(g) has an overall enthalpy change of - 66 kJ. The activation energy for the reaction is 7 kJ.
(a) Sketch the energy profile for the reaction, and label Ea and (E.
(b) What is the activation energy for the reverse reaction?

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