At room temperature, gas Q decomposes slowly. $\text{Q}(g) \rightarrow \text{X}(g) + \text{Z}(g)$ Shown is the Boltzmann distribution curve for gas Q at room temperature. Which change happens when a catalyst is added to gas Q?
- AThe peak of the curve moves to the right on the diagram.
- BThe number of particles with enough energy to decompose increases.
- CThe kinetic energy of the unreacted particles increases.
- DThe value of $E_a$ decreases, moving the vertical dotted line to the right on the diagram.