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===preparation===in commerce, no is produced by the oxidation of ammonia at 750-900 °c (normally at 850 °c) with platinum as catalyst::4 nh3 + 5 o2 → 4 no + 6 h2othe uncatalyzed endothermic reaction of o2 and n2, which is performed at high temperature (>2000 °c) by lightning has not been developed into a practical commercial synthesis (see birkeland–eyde process)::n2 + o2 → 2 noin the laboratory, nitric oxide is conveniently generated by reduction of dilute nitric acid with copper::8 hno3 + 3 cu → 3 cu(no3)2 + 4 h2o + 2 noor by the reduction of nitrous acid in the form of sodium nitrite or potassium nitrite:: 2 nano2 + 2 nai + 2 h2so4 → i2 + 4 nahso4 + 2 no: 2 nano2 + 2 feso4 + 3 h2so4 → fe2(so4)3 + 2 nahso4 + 2 h2o + 2 no: 3 kno2(l) + kno3(l) + cr2o3(s) → 2 k2cro4(s) + 4 no(g)the iron(ii) sulfate route is simple and has been used in undergraduate laboratory experiments.
תהליך זה אינו פרקטי ולא נמצא בשימוש::: n2 + o2 → 2 no:: 8 hno3 + 3 cu → 3 cu(no3)2 + 4 h2o + 2 no:: 2 nano2 + 2 nai + 2 h2so4 → i2 + 4 nahso4 + 2 no:: 2 nano2 + 2 feso4 + 3 h2so4 → fe2(so4)3 + 2 nahso4 + 2 h2o + 2 no:: 3 kno2 (l) + kno3 (l) + cr2o3(s) → 2 k2cro4(s) + 4 no* חנקן חמצני בנשיפה==הערות שוליים==
