What are the raw materials used in the Haber process?

The raw materials used in the Haber process are nitrogen from the air and hydrogen from natural gas. This process is a crucial industrial method for synthesizing ammonia, which is a key component in fertilizers.

Nitrogen is abundant in the atmosphere, making it an ideal and readily available raw material. The hydrogen is typically sourced from natural gas (methane), through a process known as steam methane reforming, where methane reacts with steam to produce hydrogen and carbon dioxide.

The Haber process itself involves the reaction of these two gases under high pressure and temperature in the presence of a catalyst, typically iron, to form ammonia (NH₃). This synthesis is key for the agriculture industry as it allows for the large-scale production of ammonia fertilizers, supporting global food production.

The other options do not represent the correct raw materials for the Haber process. For example, oxygen is not involved in the creation of ammonia, and other materials listed, such as ammonia from plants or sulfur from minerals, are not suitable as starting materials for this specific chemical synthesis.