Which set of conditions is typically used in the Haber process for the industrial manufacture of ammonia?

1. A Option A: About 450 °C, about 2 atm and a vanadium(V) oxide catalyst
2. B Option B: About 900 °C, about 1 atm and a nickel catalyst
3. C Option C: About 25 °C, about 1000 atm and a platinum catalyst
4. D Option D: About 450 °C, about 200 atm and an iron catalyst

Answer checked 11 October 2026 · How we write and check questions