Question -
Consider an endothermic reaction X→Y with the activation energies Eb and Ef for the backward and forward reactions, respectively. IN general
Options:
A .  There is no definite relation between EbandEf
B .  Eb=Ef
C .  Eb>Ef
D .  Eb
Answer: Option D : D Enthalpy of reaction(ΔH)=Ea(f)−Ea(b) for an endothermic reactionΔH = + ve hencefor ΔH to be negativeEa(b) < Ea(f)
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