Sodium peroxide

Sodium peroxide is a chemical compound made of sodium and peroxide ions. Its chemical formula is . The molar mass is around 77.98 g/mol (anhydrous). It usually forms the octahydrate compound when hydrated. It appears as a yellow to white powder (anhydrous) or just white powder (octahydrate). It is a strong base.

Formation and reactions of sodium peroxide
It is made when sodium metal reacts with excess oxygen when heated to first make sodium oxide then to sodium peroxide.
The first step balanced chemical equation is:

The second step balanced chemical equation is:

It can be also made (the octahydrate form) when sodium hydroxide reacts with hydrogen peroxide (and some water).
The balanced chemical equation is:

It hydrolyzes in water to make sodium hydroxide and hydrogen peroxide or oxygen depending on the temperature.
The balanced chemical equation (in cold water) is:

While the balanced chemical equation (in hot water) is:

Related pages
Lithium peroxide
Magnesium peroxide

Category:Sodium compounds
Category:Peroxides