What is ostwald process?
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1) It is oxidized in the presence of platinium as catalyst at about 900 degrees Celcius to form nitric oxide and water.
4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (g)
2) Nitric oxide is oxidized again to form nitrogen dioxide and then it reacts with water to form dilute nitric acid whereas some portion of the nitrogen dioxide is reduce back to nitric oxide.
2 NO (g) + O2 (g) → 2 NO2
3 NO2 (g) + H2O (l) → 2 HNO3 (aq) + NO (g)
Alternatively if the nitrogen dioxide reacts with oxygen.
4 NO2 (g) + O2 (g) + 2 H2O (l) → 4 HNO3
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The Ostwald process is a chemical process used for making nitric acid (HNO3). Wilhelm Ostwald developed the process, and he patented it in 1902.
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