Chemistry · EQUILIBRIUM

For the Haber synthesis of ammonia: \( \text{N}_2\text{(g)} + 3\text{H}_2\text{(g)} \rightleftharpoons 2\text{NH}_3\text{(g)} \; (\Delta H < 0) \), which combination of conditions provides the industrially chosen optimum parameters in presence of an iron catalyst?

1. A
   Around \( 100^\circ\text{C} \) and \( 1\text{ atm} \)
2. B
   Around \( 1000^\circ\text{C} \) and \( 50\text{ atm} \)
3. C
   Around \( 25^\circ\text{C} \) and \( 200\text{ atm} \)
4. D
   Around \( 500^\circ\text{C} \) and \( 200\text{ atm} \)