The Boltzmann distribution for the hydrogenation of an alkene at a specific temperature without a catalyst is shown. Which row correctly describes what happens when nickel is added 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