What are the raw materials used in the Haber process?

The Haber process is crucial for synthesizing ammonia, which is foundational for various fertilizers and other chemicals. The correct raw materials used in this process are nitrogen and hydrogen. Nitrogen is sourced from the air, making up about 78% of the Earth's atmosphere, while hydrogen is typically derived from natural gas, which is primarily composed of methane (CH₄). During the Haber process, nitrogen reacts with hydrogen under high pressure and temperature in the presence of a catalyst to produce ammonia (NH₃).

The other choices do not accurately reflect the reactants needed for the Haber process. Oxygen and carbon dioxide are not involved in the reaction, nor are ammonium sulfate and methane used as primary reactants for the synthesis of ammonia. Water does not serve as a direct input for producing ammonia in this context. Understanding the specific requirements of the Haber process helps in grasping the importance of these raw materials in industrial chemistry.