Consider an endothermic reaction X→Y with the activation energies E

Question

Consider an endothermic reaction

X \to Y

with the activation energies

E_{b}

and

E_{f}

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

(Δ H) = E_{a_{(f)}} - E_{a_{(b)}}

for an endothermic reaction

Δ H

= + ve hencefor

Δ H

to be negative

E_{a_{(b)}}

E_{a_{(f)}}

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