A sample of sulfuric acid is mixed with $10\,\text{g}$ of zinc granules. As the reaction takes place, a gas is formed. The reaction rate increases when a small quantity of copper is added. The copper remains unchanged at the end of the reaction. Which statement correctly describes this reaction?
- ACopper acts as a biological catalyst in this reaction.
- BCopper lowers the activation energy of this reaction.
- CThe rate of the reaction is greater as the particle size of the zinc is greater.
- DThe rate of the reaction is greater if the pressure is increased.