The production of Ammonia Flashcards
What are the raw materials needed for the haber process?
Nitrogen and Hydrogen.
Where is nitrogen obtained form?
From the air.
Where is hydrogen obtained form?
It may be obtained from natural gas or other sources.
At what temperature are the purified gases passed over an iron catalyst?
About 450 degrees Celsius.
At what pressure are the purified gases passed over an iron catalyst?
About 200 atmospheres.
What type of reaction is the haber process?
A reversible reaction.
What does ammonia break down into?
Back into hydrogen and nitrogen.
What happens to the remaining hydrogen and nitrogen once the ammonia liquefies and is removed?
The remaining hydrogen and nitrogen are recycled.
In a closed system, when is equilibrium reached?
When the reaction occurs at exactly the same rate in each direction.
What do the relative amounts of all the reacting substances at equilibrium depend on?
The conditions of the reaction.
When the temperature is increased in an endothermic reaction, what happens to the yield?
The yield increases.
When the temperature is increased in an exothermic reaction, what happens to the yield?
The yield decreases.
When the temperature is decreased in an endothermic reaction, what happens to the yield?
The yield decreases.
When the temperature is decreased in an exothermic reaction, what happens to the yield?
The yield increases.
In gaseous reactions, will an increase in pressure favour the reaction that produces the least or most molecules?
Least
