An uncatalysed gaseous reaction is initially carried out at temperature T1 T_1\,T1 with an activation energy EaE_{\text{a}}Ea.
The reaction is then modified by adding a heterogeneous catalyst and raising the temperature to T2T_2T2 (T2>T1T_2 > T_1T2>T1), as shown in the Maxwell-Boltzmann distribution curves below:
Which row in the table correctly describes the change in the activation energy (EaE_{\text{a}}Ea) and the change in the most probable molecular energy (EpE_{\text{p}}Ep) for the reaction?
| Activation energy (EaE_{\text{a}}Ea) | Most probable molecular energy (EpE_{\text{p}}Ep) | |
|---|---|---|
| A | Decreases | Decreases |
| B | Decreases | Increases |
| C | Remains unchanged | Increases |
| D | Remains unchanged | Decreases |
Row A
Row B
Row C
Row D
