Question

In the preparation of HNO3 by Ostwald process ammonia is
(A) reduced
(B) Oxidised
(C) Reduced and Oxidised
(D) Hydrolysed
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Answer 1

Answer:

Usually, in the Ostwald process ammonia is transformed into nitric acid. ...

Answer 2

Answer:

(C) Reduced and Oxidised

Ammonia is converted to nitric acid in 2 stages. It is oxidized by heating with oxygen in the presence of a catalyst such as platinum with 10% rhodium, to form nitric oxide and water. This reaction is strongly exothermic, making it a useful heat source once initiated.  

Stage two encompasses two reactions and is carried out in an absorption apparatus containing water. Initially nitric oxide is oxidized again to yield nitrogen dioxide. This gas is then readily absorbed by the water, yielding the desired product (nitric acid, albeit in a dilute form), while reducing a portion of it back to nitric oxide.

Hence, industrial preparations of HNO  

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 by Ostwald's process involves oxidation of NH  

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Explanation:

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