The production of ammonia Flashcards
What are the raw materials for the Haber process?
Nitrogen and hydrogen.
Nitrogen is obtained how?
From the air.
Hydrogen is obtained how?
From natural gas or other sources.
What catalyst is used in the Haber process?
A catalyst of iron.
What temperature is used in the Haber process?
About 450C.
What pressure is the Haber process conducted at?
200 atm.
How is ammonia removed?
Upon cooling ammonia liquifies first and is removed. The hydrogen and nitrogen present are recycled in this process.
What term is used to describe when a reversible reaction closed system has the same rate of reaction in both directions?
Equilibrium.
The relative amounts of each reactant in equilibrium depends upon what?
The conditions of the reaction.
If the temperature is raised the yield from the exothermic reaction…
…decreases.
If the temperature is raised the yield from the endothermic reaction…
…increases.
If the temperature is lowered the yield from the exothermic reaction…
…increases.
If the temperature is lowered the yield from the endothermic reaction…
…decreases.
In a gaseous reaction what happens if the pressure is increased?
The reaction favours the side with the least molecules as shown by the symbol equation for that reaction.
What factors can determine the optimum conditions in industrial processes such as the Haber process?
Rates of reaction.
Pressure.
Temperature.