Ammonia is produced by combining hydrogen with nitrogen in the Haber process. Which row gives the origins of hydrogen and nitrogen and the conditions employed in the production of ammonia by the Haber process?
- Asource of hydrogen: air; source of nitrogen: natural gas; temperature $250\,^{\circ}\text{C}$; pressure $2\text{ atm}$
- Bsource of hydrogen: air; source of nitrogen: natural gas; temperature $250\,^{\circ}\text{C}$; pressure $200\text{ atm}$
- Csource of hydrogen: natural gas; source of nitrogen: air; temperature $450\,^{\circ}\text{C}$; pressure $2\text{ atm}$
- Dsource of hydrogen: natural gas; source of nitrogen: air; temperature $450\,^{\circ}\text{C}$; pressure $200\text{ atm}$