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The Haber Process
This reaction is reversible (shown by the arrow).
The forward reaction (from left to right) is exothermic.
+ hydrogen ammonia (
N2(g) + 3H2(g) 2NH3(g) ( + heat)
industrial conditions are
1) Temperature between 450 °C and 500 °C.
2) Pressure of 200 atm (200 atmospheres).
3) Use an iron catalyst.
15% of the reactants are converted into products
under these conditions.
Ammonia is cooled and liquefied at the reaction pressure,
and then removed as liquid ammonia.
The remaining mix of nitrogen and hydrogen gases (85%)
are recycled and fed in at the reactant stage.
The process operates continuously.
next few pages we shall look
at the conditions used in industry for this process.
Links Reversible Reactions Revision Questions
gcsescience.com The Periodic Table Index Haber Process Quiz gcsescience.com
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