Same chapter3 marksDifficulty: Medium
Why is ammonia dried over quicklime and not over concentrated sulphuric acid or phosphorus pentoxide?
Study of Compounds: Ammonia
3 marksDifficulty: Medium
Write the equation for the catalytic oxidation of ammonia and name the industrial process in which it is the first step.
Original Khojo Papers practice question — not from a past board paper.
Answer
4NH3 + 5O2 → 4NO + 6H2O, over platinum gauze at about 800 °C. It is the first step of the Ostwald process for making nitric acid.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The nitric oxide is then oxidised to nitrogen dioxide, which is dissolved in water in the presence of air.
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