Industrially, ammonia is produced by the Haber process. The equation is shown. $\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g) \quad \Delta H = -92\,\text{kJ mol}^{-1}$ The conditions employed are $450^{\circ}\text{C}$ and $200\,\text{atm}$. Which of the following statements about these conditions are correct?
- A1 and 2
- B1 and 4
- C2 and 3
- D3 and 4