Haber Process

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?

N_{2 (g)} + 3H_{2 (g)} —> 2NH_{3 (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