Question

For an endothermic reaction, where `Delta H` represents the enthalpy of reaction in `kJ mol^(-1)`, the minimum value for the energy of activation will be
A. equal to zero
B. less than `Delta H`
C. equal to `Delta H`
D. more than `Delta H`

Answer 1

Correct Answer - D
Potential energy diagram for an endothermic reaction is

Potential energy of the activated complex should be at least just above the potential energy of the products. Thus, minimum value of `E_(a)` is more than `DeltaH` .