Q. 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 :
AIEEEAIEEE 2005Chemical Kinetics
Solution:
$X\, \to \,Y$ is an endothermic reaction $\Delta H = + ve$
$E_b$ = energy of activation of backward reaction
$E_f$ = energy of activation of forward reaction
$\Delta H$ = heat of reaction
Thus. $\quad$$\quad$ $E_b = E_f$ +$\Delta H$
Thus $\quad$$\quad$ $E_b > E_f$
