The diagram illustrates how molecular energies are spread in a gas sample at temperature $T_1$. The activation energy for the reaction without a catalyst, $E_a\text{(uncat)}$, is shown. Which diagram correctly represents the revised distribution and the new activation energy, $E_a\text{(cat)}$, when the temperature is raised to $T_2$ and a catalyst that increases the reaction rate is added?
Chemistry 9701 · AS & A Level · Reaction kinetics