The diagram shows, at one particular temperature, the Boltzmann distribution of the kinetic energies of the molecules in a mixture of two gases that react with each other. The activation energy for the reaction, $E_a$, is indicated. The dotted curves below illustrate the Boltzmann distribution for the same reaction at a higher temperature. In these diagrams, H denotes the activation energy at the higher temperature. Which diagram is correct?
Chemistry 9701 · AS & A Level · Reaction kinetics