Contact & Haber process

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9 Terms

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Haber Process

Making Ammonia (NH3) from Nitrogen and Hydrogen

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Where does the nitrogen come from?

Fractional distillation of liquid air

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Where does the hydrogen come from?

Methane from natural gas

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Conditions for Haber Process

  • Temp: 450°

  • Pressure: 200 atm

  • Catalyst: Iron

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Why is the temperature for the Haber process 450°?

The temp is high enough for a good rate of reaction and low enough for a high yield

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Contact process

Making Sulfuric acid (H2SO4)

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Stages of Contact Process

  1. Burning fossil fuels containing Sulfur

    S + O2 —> SO2

  2. Oxidation of sulfur dioxide to sulfur trioxide (reversible reaction)

    2SO2 + O2 —> 2SO3

  3. Sulfur trioxide is bubbled through H2SO4 to form Oleum (H2S2O7)

    H2SO4+SO3→H2S2O7

  4. Oleum is reacted with water to form sulfuric acid

    H2S2O7 + H2O → 2 H2SO4

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Conditions for Contact Process

Temp: 450°

Pressure: 2 atm

Catalyst: Vanadium(V) Oxide (V2O5)

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How to convert atm to kPa

atm x 100 = kPa