The Harber Process

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  • Created by: krupa_xo
  • Created on: 30-04-14 12:18
Haber Process is an important industrial process > produces ammonia ( NITROGEN + HYDROGEN = AMMONIA)
nitrogen is obrainted from the air and Hydrogen comes from natural gases. Because the reaction is reversible not ll the nitrogen and hydrogen will convert to ammonia > results into the reaction to reach a Dynamic Equalibrium
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Higher Pressures favour the forward reaction
therefore the pressure is set as high as possible to give the best % yield without making the plant too expensive to build
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the forward reaction is exothermic
means that increasing the temperature will actually move the equilibrium wrong way, away from ammonia. so the yeaild of ammonia would be greater at lower temperatures
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however, lower the temperature will result into slower rate of reaction
therefore, they increase the temperature to get faaster rate of reaction
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ammonia is formed as a gas
but when it cools in the condenser it liquefies and is removed
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Iron catalys makes the reaction go faster and gets to the equilibrium propotions faster
without the catalyst the temperature would have to be raised even further to get quick enough reaction
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Other cards in this set

Card 2

Front

therefore the pressure is set as high as possible to give the best % yield without making the plant too expensive to build

Back

Higher Pressures favour the forward reaction

Card 3

Front

means that increasing the temperature will actually move the equilibrium wrong way, away from ammonia. so the yeaild of ammonia would be greater at lower temperatures

Back

Preview of the back of card 3

Card 4

Front

therefore, they increase the temperature to get faaster rate of reaction

Back

Preview of the back of card 4

Card 5

Front

but when it cools in the condenser it liquefies and is removed

Back

Preview of the back of card 5
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