2BaO2

2BaO2 refers to a chemical formula. This formula represents barium peroxide. Barium peroxide is an inorganic compound composed of barium and oxygen. It has the chemical formula BaO2. The "2" in 2BaO2 is not a subscript in standard chemical notation; chemical formulas use subscripts to denote the number of atoms of each element. Therefore, 2BaO2 is an unconventional way to represent barium peroxide, possibly indicating two units of BaO2, or perhaps a misunderstanding of chemical formula representation. The correct chemical formula for barium peroxide is BaO2.

Barium peroxide is a white solid. It is a peroxide, meaning it contains the peroxide anion O2^2-. This compound can be formed by heating barium oxide in the presence of oxygen. Barium peroxide is a strong oxidizing agent. It can decompose to form barium oxide and oxygen gas when heated to higher temperatures. It is sparingly soluble in water and reacts with acids. Barium peroxide has found some industrial applications, historically as a source of oxygen and in pyrotechnics due to its oxidizing properties.

---