Saturday, 13 July 2013

Nitric acid is prepared in large scale from ammonia and air.
Reactants
Pure dry ammonia (1 volume) and air (10 volumes)
Reactions
1- 1st step - Catalytic oxidation of ammonia to form nitric oxide

2- 2nd step - Oxidation of nitric oxide to nitrogen dioxide.

3- 3rd step - Absorption of nitrogen dioxide in water to give nitric acid.
nitric acid manufacture by ostwald s process

Catalyst

Platinum (for oxidation of )

Temperature

700o - 800oC

ostwald s process

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