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How is ammonia manufactured industrially?

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Haber's process is used for manufacturing ammonia.
N 2 ​ (g)+3 2 ​ (g)⇌2NH 3 ​ (g) Δ f ​ H o =−46.1kJ/mol
Optimum conditions (to obtain maximum yield of ammonia) are around 200 atm pressure, 700 K temperature and a catalyst containing iron oxide with small amounts of K 2 ​ O and Al 2 ​ O 3 ​ . The reaction is reversible exothermic reaction and optimum conditions mentioned above are in accordance with Le Chatelier's principle.
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