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AP Chemistry
5.11 Catalysis
5.6 Reaction Energy Profile
IntermediateMCQMathematicalConceptual17.2k
Reaction coordinate energy profile for the uncatalyzed reaction \(\text{A}_2\text{(g)} + \text{B}_2\text{(g)} \rightleftharpoons 2\text{AB(g)}\).
Reaction coordinate energy profile for the uncatalyzed reaction \(\text{A}_2\text{(g)} + \text{B}_2\text{(g)} \rightleftharpoons 2\text{AB(g)}\).
A potential energy profile for the uncatalyzed elementary gas-phase reaction \(\text{A}_2\text{(g)} + \text{B}_2\text{(g)} \rightleftharpoons 2\text{AB(g)}\) is shown in the diagram.

When a catalyst is added to the reaction vessel, it provides an alternate pathway with an activation energy of \(50\text{ kJ/mol}\) for the forward reaction. Which of the following predicts the activation energy of the reverse reaction, \(E_{a,\text{rev}}\), for the catalyzed pathway and provides the correct justification?

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