The Boltzmann distribution for the hydrogenation of an alkene at a specific temperature when no catalyst is present is shown. Which row gives the correct description of the effects of adding a nickel catalyst to the reaction vessel?
- AThe shape of the Boltzmann distribution changes; activation energy, $E_a$, decreases.
- BThe shape of the Boltzmann distribution changes; activation energy, $E_a$, increases.
- CThe shape of the Boltzmann distribution does not change; activation energy, $E_a$, decreases.
- DThe shape of the Boltzmann distribution does not change; activation energy, $E_a$, increases.