From the diagram, curve X was produced by recording the volume of oxygen given off during the decomposition of $100\ \text{cm}^3$ of $1.0\ \text{mol dm}^{-3}$ hydrogen peroxide. Manganese(IV) oxide was used as the catalyst. Which change to the initial experimental conditions would generate curve Y?
- Aadding more manganese(IV) oxide
- Badding some $0.1\ \text{mol dm}^{-3}$ hydrogen peroxide
- Cadding water
- Draising the temperature