Consider the following for the mechanism oxidation of bromide ions by hydrogen peroxide in aqueous acid solution. Elementary Step 1 H+ + H₂O₂ = {H₂O*- 2 OH) (rapid equilibrium) Elementary Step 2 (H₂O+-OH) + Br¯ → HOBr + H₂O (slowest) Elementary Step 3 HOBr + H+ + Br¯ → Br₂ + H₂O (fast) Consider the reaction profile below. Approximate the AH for the overall reaction.

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