Ammonia is made by the Haber process. $\text{N}_2(\text{g}) + 3\text{H}_2(\text{g}) \rightarrow 2\text{NH}_3(\text{g})$. Which statement about the Haber process is incorrect?
- AAn iron catalyst is used to increase the rate of reaction.
- BThe reaction is carried out at high temperature to increase the rate of reaction.
- CThe reaction is carried out at low pressure to increase the yield of ammonia.
- DThe reaction is reversible.