Dinitrogen

The video tutorial explains the preparation, properties, reactivity, and uses of dinitrogen. Commercially, dinitrogen is produced by fractional distillation of liquefied air. In laboratories, it can be prepared using ammonium chloride and sodium nitride or by thermal decomposition of compounds like barium azide. Dinitrogen is colorless, odorless, and inert at room temperature but becomes reactive at higher temperatures. It forms ionic and covalent nitrides with metals and non-metals, respectively. Dinitrogen is crucial in the production of ammonia and other industrial chemicals, and it is used as a refrigerant and in creating inert atmospheres.

Which method is used commercially to produce dinitrogen?

• Fractional distillation of liquefied air

• Thermal decomposition of barium azide

• Thermal decomposition of ammonium dichromate

• Reaction of ammonium chloride with sodium nitride

What is a key property of dinitrogen that makes it inert at room temperature?

• High solubility in water

• Low boiling point

• High bond enthalpy of the N≡N bond

• Presence of stable isotopes

At higher temperatures, dinitrogen reacts with metals to form what type of compounds?

• Metal oxides

• Ionic nitrides

• Covalent nitrides

• Metal hydrides

In which industry is dinitrogen used to create an inert atmosphere?

• Automobile industry

• Pharmaceutical industry

• Iron and steel industry

• Textile industry

What is one of the applications of liquid dinitrogen?

• As a solvent

• In food coloring

• As a fuel

• In cryosurgery