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प्रश्न
Describe the industrial preparation method of ammonia, with a labelled diagram.
आकृती
लघु उत्तर
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उत्तर
Ammonia is manufactured industrially by combining nitrogen and hydrogen in the ratio 1 : 3. The mixture is compressed to about 200 atm and passed over finely divided iron catalyst at about 450°C.
The reaction is:
\[\ce{N2 + 3H2 <=> 2NH3 + heat}\]
The ammonia formed is cooled and separated as liquid ammonia. The unreacted nitrogen and hydrogen are recycled.
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