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Ammonia and Nitric Acid — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryAmmonia and Nitric Acid3 Marks
Question
(a) Copy and complete the following table:
Name of the processCatalystTemperatureEquation for the reaction
Haber's Process
(b) How is ammonia separated from unreacted nitrogen and hydrogen?
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Answer


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(b) The mixture of gases is suddenly allowed to expand by passing it through a nozzle with a very small orfice. The ammonia gas on sudden expansion liquefies, but not hydrogen and nitrogen (Boiling point of NH3 is -33°C, whereas that of N2 is -196°C and H2 is -253°C).
The recovery of ammonia is achieved either by liquefaction (discussed above) or by absorption of water.

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