Barium oxide
Barium oxide is a chemical compound. Its chemical formula is BaO. It contains barium and oxide ions.
Properties
[change | change source]Barium oxide is a white solid. It dissolves in water to make barium hydroxide. It reacts with acids to make barium salts.
Preparation
[change | change source]Barium oxide is made by heating barium carbonate with carbon. This prevents barium peroxide from forming when it is heated. It can also be made by heating barium nitrate.
Uses
[change | change source]Barium oxide can be added to glass instead of lead(II) oxide. It is also used in cathode ray tubes. It can be used as a catalyst.
Safety
[change | change source]Barium oxide is very toxic when eaten.