Sodium does not react easily with oxygen at a room temperature so it has to be heated up a little for the reaction to start. Since air is mostly oxygen once the reaction starts it gets pretty violent and the piece of sodium explode.
Formation of sodium oxide: 4 Na + O2 = 2 Na2O
Carbon dioxide is produced when carbon is burnt in air.
4Na + O2 ----> 2Na2O Sodium oxide is formed.
It reacts with oxygen in air to form sodium oxide (Na2O) and some sodium peroxide (Na2O2) and reacts with nitrogen to form some sodium nitride (Na3N).
Sodium tarnishes when exposed to air because it reacts with oxygen to form sodium oxide. This tarnish layer can then react with moisture in the air to form sodium hydroxide, which gives it a dull appearance.
Burnt sodium exposed to oxygen forms sodium oxide, a white powder. This reaction is very exothermic, releasing a significant amount of heat. It can also release toxic fumes, so care should be taken when handling burnt sodium in the presence of oxygen.
Formation of sodium oxide: 4 Na + O2 = 2 Na2O
Carbon dioxide is produced when carbon is burnt in air.
Goes to the oxygen.
Sodium is flammable in air.
4Na + O2 ----> 2Na2O Sodium oxide is formed.
Combustion.
It reacts with oxygen in air to form sodium oxide (Na2O) and some sodium peroxide (Na2O2) and reacts with nitrogen to form some sodium nitride (Na3N).
Sodium particularly reacts with the Oxygen in the Air while burning. Sodium + Oxygen ----> Sodium oxide
nothing can burn in the absance of air
Oxygen in the air (O2)
The main reason is to make sure that whatever is being burnt is comply burnt