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What is made in the Haber Process?
Ammonia
What are the uses of ammonia?
nitrogen based fertilisers
What is the symbol equation for the Haber Process?
N2 (g) + 3H2 (g) —> 2NH3 (g)
What catalyst do we use in the Haber process?
iron catalyst
What are the conditions of the Haber process?
450 oC
200 atp
Where do we obtain nitrogen from?
air
Where do we obtain hydrogen from?
reacting methane and steam
Why is ammonia removed from the process as it form?
to keep amount of products less
so reactions favours the forwards direction
How is ammonia removed?
cooled to condense and collected as liquid
How do we make sure reactants are not wasted?
Hydrogen and nitrogen are recycled to be used again
Is the Haber process exothermic of endothermic?
EXOthermic
What are the compromise conditions required?
temperature
pressure
Why is temperature a compromise?
compromise between high yield at low temperature and fast rate of reaction in high temperature
Why is pressure a compromise?
High pressure increases yield but is expensive
and dangerous since pipes may burst and cause explosion due to hydrogen being flammable
so is a compromise between yield, cost and safety
Why do we need ammonia as a source of nitrogen?
nitrate ions in air are insoluble so plants cannot absorb them
Note 
Flashcard (59)