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. Less than `DeltaH`
B. Zero
C. More than `DeltaH`
D. Equal to `DeltaH`

Answer 1

Correct Answer - c
For a reaction, `E_(a_(FR))=DeltaH+E_(a_(BR))`
For endothermic reaction, `DeltaH`= positive, thus `E_(a_(FR)) gt DeltaH`
For exothermic reaction, `DeltaH`= negative, thus nothing can be said.