Making Ammonia Flashcards
What are the raw materials for the haber process
Nitrogen and hydrogen
How is nitrogen obtained
From the air
How is hydrogen obtained
Natural gas or other
List the process of making ammonia
Purified gas passed over iron catalyst and 450*c and 200 pressure atmosphere
Some hydrogen and nitrogen react to form ammonia
Reaction is reversible so can break down again
What is the recordable equation for ammonia
Nitrogen+hydrogen ammonia
What happens when the ammonia is cooled
It is liquified and is removed leaving hydrogen and nitrogen to be recycled
What is an equilibrium
When a reversible reaction occurs in closed system and reaction occur at same rate
What do amounts reacting substances at equilibrium depend on
No detail just simple
Conditions of reaction
What happens to the yield in an exothermic and then endothermic reaction if temp lowered
Increases
Decreases
What will happen if you increase the pressure in a gaseous reaction
Will favour reaction that produces least number molecules (shown by symbol equation)
What are temp and pressure together with reaction rate, improve the for
Determining optimum conditions in industry processes e.g. Haber process
