The diagram illustrates the Boltzmann energy distribution curve for molecules in a mixture of two gases at a fixed temperature. For a reaction to take place, the molecules must collide with enough energy. $E_a$ is used to denote the activation energy for the reaction between the gases. From the two values shown, one is the activation energy for a catalysed reaction and the other is for an uncatalysed reaction. Which statement about $E_{a1}$ is correct?
- A$E_{a1}$ corresponds to a catalysed reaction with fewer effective collisions than the uncatalysed reaction.
- B$E_{a1}$ corresponds to an uncatalysed reaction with fewer effective collisions than the catalysed reaction.
- C$E_{a1}$ corresponds to a catalysed reaction with a greater number of effective collisions than the uncatalysed reaction.
- D$E_{a1}$ corresponds to an uncatalysed reaction with a greater number of effective collisions than the catalysed reaction.