The Maxwell–Boltzmann distribution curves for a fixed mass of a gas at two different temperatures, TAT_{\text{A}}TA and TBT_{\text{B}}TB, are shown below. The activation energy for a reaction is marked as EaE_{\text{a}}Ea.
Which of the following statements is correct?
The total area under the curve for TAT_{\text{A}}TA is greater than that for TBT_{\text{B}}TB because a higher proportion of molecules are at lower kinetic energies.
The most probable kinetic energy of the molecules at TBT_{\text{B}}TB is lower than at TAT_{\text{A}}TA, but a larger fraction of molecules have energy greater than or equal to EaE_{\text{a}}Ea.
At temperature TBT_{\text{B}}TB, the activation energy EaE_{\text{a}}Ea is reduced, allowing a larger proportion of molecules to react successfully.
The total area under each curve is identical, and at temperature TBT_{\text{B}}TB, a larger fraction of molecules possess energy greater than or equal to EaE_{\text{a}}Ea.