The graph shows a Maxwell–Boltzmann distribution of molecular kinetic energies for a sample of reacting gas at a constant temperature. Three specific energy values, E1E_1E1, E2E_2E2, and E3E_3E3, are marked on the horizontal axis.
Which statement correctly identifies the significance of these energy values?
E1E_1E1 represents the mean kinetic energy, E2E_2E2 represents the most probable kinetic energy, and the area under the curve to the right of E3E_3E3 represents the activation energy.
E1E_1E1 represents the most probable kinetic energy, E2E_2E2 represents the mean kinetic energy, and the area under the curve to the right of E3E_3E3 represents the fraction of molecules with energy equal to or greater than the activation energy.
E1E_1E1 represents the most probable kinetic energy, E3E_3E3 represents the mean kinetic energy, and the total area under the curve represents the activation energy of the reaction.
E2E_2E2 represents the most probable kinetic energy, E1E_1E1 represents the mean kinetic energy, and the area under the curve to the right of E3E_3E3 represents the rate constant of the reaction.