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A+BrarrC-50kJ, in this reaction, the en...

`A+BrarrC-50kJ,` in this reaction, the energy of activation of backward reaction is 18 kJ . Calculate the activation energy of forward reaction.

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According to the given equation , it is an endothermic reaction.
`thereforeDeltaH=+50"kJ.mol"^(-1)`
Enthalpy of reaction = activation energy of forward reaction-activation energy of backward reaction.
`therefore` Activation energy of forward reaction = `(50+18) =68"kJ.mol"^(-1)`.
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