The Haber process
- Created by: jaaaz_v
- Created on: 13-05-15 17:49
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- The Haber Process
- 200 Atmospheres
- Favors the forward reaction
- Can't be too high or plant would be too expensive to build
- To support high pressures
- 450°
- Forward reaction is exothermic
- High temp. actually moves equilibrium in the wrong direction
- % yield is greater at lower temperatures
- Low temp = lower rate of reaction
- Increase temp. to increase rate of reaction
- Its a compromise
- Iron catalyst
- Reduces costs
- Equilibrium proportions are met faster
- Catalyst doesn't affect the position of equilibrium
- Without the catalyst the temp. would need to be higher
- Which would reduce % yield even more
- Produces ammonia
- Uses nitrogen and hydrogen
- Nitrogen is obtained from the air (which is 78% hydrogen)
- Hydrogen comes from natural gas, or cracking of crude oil
- 200 Atmospheres
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