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Consider an endothermic reaction X → Y with the activation energies Eb and Ef for the backward and forward reactions,

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Consider an endothermic reaction X → Y with the activation energies Eb and Ef for the backward and forward reactions, respectively. In general
(a) Eb < Ef
(b) Eb > Ef
(c) Eb = Ef
(d) there is no definite relation between Eb and Ef

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1 Answer

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(a) : For endothermic reaction, ΔH = +ve
ΔH = Ef – Eb , it means Eb < Ef .

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