Question
Consider an endothermic reaction, X → Y with the activation energies Eb and Ef for the backward and forward reactions, respectively. In general
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Eb < Ef
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Eb > EfEb > Ef
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Eb = Ef
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There is no definite relation between Eb and Ef
Solution
A.
Eb < Ef
∆H = Ef – Eb
For ∆H = Positive, Eb < Ef
