2. Consider the cost of extracting and treating the raw materials
3. Consider the energy costs associated with heating and cooling the conditions required for the reaction
4. It's important to be able to control the conditions (like temperature, pressure and the presence of a catalyst) to maximise the yield, but keep the costs down
Fertilisers Help Plants Grow
Fertilisers
Help to ensure plants get the nutrients they need to grow
Ammonia is Used to Make Fertilisers
Making Ammonia
1. Ammonia can be synthesised directly from nitrogen and hydrogen
2. Ammonia can also be produced as a by-product of other industrial processes, like the production of coke from coal
Different Methods for Making Fertilisers
Ammonium sulfate
Sulfuric acid
Phosphoric acid
Catalysts and Conditions Both Affect How Quickly Equilibrium is Reached
Increasing the catalyst, temperature, pressure and concentration of reactants
Increases the rate at which equilibrium is reached
A pressure of 200 atm is used in the industrial production of ammonia via the Haber process
