Properties and Use of Nitrogen

Nitrogen is a colorless, tasteless and odourless gas.

It is also non-toxic in nature. Hence it forms a good preservative for the Potato chips.

Let us study some more Physical Properties of Nitrogen gas.

Nitrogen has two stable isotopes.

It has a very low solubility in water, about 23.2 per litre at STP.

It also as a very low boiling point, about 238.5 K, that is just around .

It’s freezing point is also very low, 195.2 K, which is about .

This is how the Nitrogen gas looks on freezing.

Now let us move on to the Chemical Properties of Nitrogen.

Nitrogen gas exists as the N-N triple bond. Hence it is also called as Dinitrogen.

This triple bond has a high enthalpy of formation. Hence it is very strong.

This makes Dinitrogen inert at room temperature.

However, as the temperature increases, Dinitrogen starts becoming more and more reactive.

Let us now see more about the Chemical Reactivity of Dinitrogen.

At higher temperatures Nitrogen directly combines with metals to form Ionic Nitrides.

For example.

And it reacts with non-metals to form covalent nitrides.

Dinitrogen also combines with Hydrogen in presence of a catalyst to form Ammonia.

It reacts with Oxygen gas to form Nitric oxide, NO.

Dinitrogen has several uses in the industries.

The main use of Nitrogen is in manufacture of Ammonia.

It is also used in production of Nitrogen containing chemicals like Calcium Cyanamide.

As it is non-reactive at room temperature, hence, it is used to create inert environments in industries.

If mixed with certain chemicals, Dinitrogen can makes them inert as well, temporarily.

Liquid Nitrogen is used as a refrigerant to preserve biological materials.

It is also used in preservation of food items.

Revision

Nitrogen is a colorless, odorless and tasteless, non-toxic gas.

It has a very low solubility in water and also low freezing and boiling points.

It exists as Dinitrogen in nature and is inert at room temperature.

At high temperature, it reacts with metal and non-metals to form nitrides.

It reacts with Hydrogen to form Ammonia.

It reacts with Oxygen to form oxide.

Dinitrogen is mainly used in production of Ammonia and in preservation of food items.

The End.