Nitrous oxide is an inorganic molecule made up of two nitrogen elements and one oxygen element. It is one of the variable oxides of nitrogen. But its name is not considered in the NOx gases that are responsible for air pollution. This gas was discovered by the chemist Joseph Priestley.
Nitrous Oxide Chemical Formula and Chemical Name
The chemical name of nitrous oxide is dinitrogen monoxide or nitrogen (I) oxide. The Nitrous oxide chemical formula is N2O. The nitrous oxide chemical formula represents two atoms of nitrogen and one atom of oxygen. It is an unreactive gas. The oxidation state of nitrogen is +1 in nitrous oxide gas.
Structure of Nitrous Oxide
(Image to be added soon) (Image to be added soon)
Nitrous oxide is a linear inorganic molecule. The pi-bond present in the molecule shows resonance. The overall structure of nitrous oxide shows the bond length of 113 pico-meter N-O bond and 119 pico-meter N-O bond.
Properties of Nitrous Oxide
Physical properties of nitrous oxide
Nitrous oxide is colourless in nature.
It exists in the gaseous state.
Nitrous oxide is a neutral molecule.
It has a pleasant odour.
It is sweet in taste.
Its molecular weight is 44 g/mol.
It is soluble in water.
Its vapour is denser than air.
It is non-comustible in nature.
Chemical Properties of Nitrous Oxide
Nitrous oxide gas decomposes violently at high temperatures.
It causes global warming.
Nitrous oxide reacts with sodamide to form sodium azide.
N2O + 2NNH2 → NaN3 + NH3 + NaOH
In small amounts, it generally acts as an anaesthetic chemical for minor operations.
Nitrous oxide decomposes into nitrogen and oxygen at 873 K. Therefore, it supports the combustion reaction in the presence of a source of oxygen.
The oxidation state of nitrogen in nitrous oxide gas is +1.
Preparation of Nitrous Oxide
Nitrous oxide is prepared by a heating rection. Ammonium nitrate is heated at a high temperature and nitrous oxide is formed as a product and water molecule as a byproduct. Ammonium nitrate is a thermally unstable molecule. Therefore, it gets decomposed at high temperatures.
NH4NO3 → N2O + 2H2O