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:

E_{b} > E_{f}

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E_{b} < E_{f}

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E_{b} = E_{f}

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Any of the above

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Solution

The correct answer is option B
X→Y is an endothermic reaction $Δ H = + v e$
$E_{b} =$ energy of activation of backward reaction
$E_{f}$ = energy of activation of forwarding reaction
$ΔH =$ heat of reaction

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