The haber process

What gases are the reactants for the haber process?

Nitrogen and hydrogen

What atmosphere is used in the haber process?

200atm

State the ecosystem services provided by plants

Food source and remove carbon dioxide from atmosphere

What catalyst is used in the haber process?

Iron

What conditions are needed for the haber process?

200 atm, 450 degrees Celsius, iron catalyst

State the balanced equation for the haber process

N2 + 3H2 → 2NH3

Where is the nitrogen obtained from

From the air

Where is the hydrogen obtained from

From hydrocarbons

Why is 200atm a good compromise

High pressures expensive and can be hazardous. 200atm acts as a compromise between rate of ammonia production and safety and cost

What happens if you inc the pressure

equilibrium shifts to the right in the exothermic direction towards the products because there are less molecules there therefore inc rate of reaction  

What happens if you inc the temp?

Inc temp shifts equilibrium to the left in the endothermic direction therefore decreases percentage yield

Why do we use 450 degrees Celsius

450 degrees is a compromise. Low temp Is ideal bc equilibrium would shift to the right in the exothermic direction and therefore inc yield. But low temp causes a slower rate of reaction bc lack of activation energy. So 450 degrees used to make ammonia faster despite the lower yield

What are the ideal conditions of the haber process

High pressure, low temp

Give two negative consequences of using high pressure

Expensive and dangerous

Give a description of the temp used

Low enough for reasonable yield but high enough for a fast reaction

Give a description of the pressure used

Low enough to not need expensive reinforced apparatus but high enough to give a reasonable yield