What is Barium peroxide?
[[File:Peroxid barnatý.JPG|thumb|Barium peroxide]] '''Barium peroxide''' is a [[chemical compound]]. Its chemical formula is BaO<sub>2</sub>. It contains [[barium]] and [[peroxide]] [[ion]]s. ==Properties== Barium peroxide is a gray-white solid. It reacts with water to make [[oxygen]] gas. When it is heated very hot, it releases oxygen and turns into [[barium oxide]]. ==Preparation== It is made by heating barium oxide. This process used to be used to get oxygen from the air. Barium oxide was heated to around 300°C, absorbing oxygen and making barium peroxide. The barium peroxide was heated above 500°C, releasing the oxygen. Then it could be reused. ==Uses== Barium peroxide can be used to make hydrogen peroxide by reaction with [[sulfuric acid]]. This also makes the solid [[barium sulfate]]. ==Related pages== *[[Barium oxide]] *[[Barium chloride]] [[Category:Barium compounds]] [[Category:Oxygen compounds]]