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Nitrogen
STRUCTURE |
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COMMERCIAL
PREPARATION |
By fractional distillation of liquid air |
LABORATORY
PREPARATION |
By warming ammonium nitrite
NH4NO2 (s) -> N2 (g) + 2H20 (l)
Or by slowly adding a solution of ammonium chloride to a warm solution of ammonium nitrite
NH4+ (aq) + NO2- (aq) -> N2 (g) + 2H20 (l)
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| PROPERTIES |
Colourless, odourless, insoluble in water, generally unreactive. |
| USES |
To make an oxygen-free work environment, to remove flammable vapours, to produce fertilisers, for fruit storage and snap freezing. |
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