Nitrogen oxides trioxide

At high temperatures oxygen reacts with the nitrogen in the air forming small amounts of nitrogen oxide (p. 210). Sulphur burns with a blue flame when heated in air to form sulphur dioxide SO2, and a little sulphur trioxide SO3. Selenium and tellurium also burn with a blue flame when heated in air, but form only their dioxides, Se02 and Te02. 

Gases analyzed include hydrocarbons, carbon monoxide, carbon dioxide, sulfur dioxide, sulfur trioxide, nitrogen oxides (also nitrous oxide, N2O), hydrogen chloride, hydrogen cyanide, ammonia, etc. 

Arsenic trioxide reacts violently and nitrogen oxide ignites in excess fluorine. Bubbles of sulfur dioxide explode separately on contacting fluorine, while addition of the latter to sulfur dioxide causes an explosion at a certain concentration [1], Reaction of fluorine with dinitrogen tetraoxide usually causes ignition [2], Interaction with carbon monoxide may be explosive. Anhydrous silica incandesces in the gas, and interaction with liquid fluorine at — 80°C is explosive [3,4], Boron trioxide also incandesces in the gas [3],... 

MRH Dinitrogen monoxide 6.99/84, dinitrogen trioxide 9.25/75, nitrogen oxide 9.71/78, nitrous acid 7.11/79... 

Warm or molten white phosphorus bums vigorously in nitrogen oxide, dinitrogen tetraoxide or dinitrogen pentaoxide. White phosphorus ignites after some delay in contact with the vapour of sulfur trioxide, but immediately in contact with the liquid if a large portion is used. 

Dinitrogen oxide Dinitrogen pentaoxide Dinitrogen tetraoxide Dinitrogen trioxide Nitrogen dioxide Nitrogen oxide... 

Nitrogen oxides, which are mainly released from industrial stacks, include nitrous oxide (N2O), nitric oxide (NO), nitrogen dioxide (NO2), nitrogen trioxide (N2O3), nitrogen tetraoxide (N2O4),... 

Di nitrogen Tetroxide, N2O4 l nitrogen oxides Di nitrogen Trioxide, N2O3 1... 

An alternative explanation proposed by F. Raschig, who also regarded nitrogen trioxide or nitrous acid as the form in which the nitrogen oxides are active, is based on the primary formation of a hypothetical nitrososulphonie acid, as represented by the equations ... 

The residue from Experiment Mo. 9 may be used, or the compound may be prepared independently as follows Twenty grains of arsenic trioxide are treated dropwise with 2ttml of concentrated nitric add under the hood and the mixture is heated on the steam bath until the evolution of nitrogen oxides is complete. The liquid is decanted from any undissolved made and evaporated just to dryness over a very small flame. The residue is dissolved in 75ml of hot water and filtered by suction if necessary. A thermometer is placed in the filtrate and the latter is evaporated until the viscous liquid has reached a temperature of 130° C. The vessel and contents are transferred to a vacuum desiccator which is placed in the refrigerator an almost solid mass of white crystalline product is obtained. 

K. Tantalum. (Tantalum mp 2,996°C), is an extremely chemically resistant metal which is hard but ductile. Because of its high melting point and good corrosion resistance, tantalum is frequently used as a container for high-temperature melts. It is attacked by HF and other fluorides, as well as sulfur trioxide and nitrogen oxides. 

In their process, the mixture of nitrogen oxides evolved during the action of arsenic trioxide on nitrio acid is passed over coarsely powdered ammonium carbonate kept cool by ice. The half liquid mass is treated with aloohol, the unchanged carbonate filtered off, and the ammonium nitrite precipitated by the addition of ether. The nitrite so obtained is of 90-94 per cent, purity, and may be purified by re-solution in 96 per cent, aloohol and repreoipitation with ether. 

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