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Enthalpy of Combustion

The activatio...

Question

The activation energies for forward and backward reactions are $E_{f} a n d E_{b}$ respectively.
If the reaction is exothermic then:

E_{f} > E_{b}

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E_{f} < E_{b}

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E_{f} = E_{b}

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There is no relation between

E_{f}

and

E_{b}

directly.

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Solution

The correct option is A $E_{f} < E_{b}$
REF.Image
Endothermic - $E_{a}$ for the forward reaction is greater then $E_{a}$ for the reverse reaction.
REF.Image
Exothermic - $E_{a}$ for the forward reaction is less then $E_{a}$ for the reverse reaction.

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