####53. For an endothermic reaction, energy of activation is $E_a$ and enthalpy of reaction of $\Delta H$ (both of these in $kJ / mol$ ). Minimum value of $E_a$ willbe.
(a) less than $\Delta H$
(b) equal to $\Delta H$
(c) more than $\Delta H$
(d) equal to zero
[2010]
$ E_a>\Delta H $
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