BaO₂ (s) + 2 HCl (aq) → BaCl₂ (aq) + H₂O₂ (aq)

Reactants:

• BaO₂ – Barium peroxide
  • Other names: Barium binoxide , Barium dioxide , Barium superoxide
  • Appearance: Grey-white crystalline (anhydrous) | colorless solid (octahydrate) ; White or grey-to-white powder
• HCl – Chlorane , Hydrogen chloride
  • Other names: Hydrochloric acid , M , Uriatic acid ... show moreHydronium chloride , Chlorhydric Acid , Hydrochloric acid gas , HCl , Anhydrous hydrogen chloride , Hydrochloric acid, anhydrous , Aqueous hydrogen chloride , [Note: Often used in an aqueous solution.] show less
  • Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]

Products:

• BaCl₂
  • Names: Barium chloride , Barium muriate , Muryate of Barytes ... show moreBarium dichloride , Barium chloride (as Ba) , BaCl2 show less
  • Appearance: White solid ; Odourless colourless crystals ; White, odorless solid.
• H₂O₂ – Hydrogen peroxide
  • Other names: Dioxidane , Oxidanyl , Perhydroxic acid ... show more0-hydroxyol , Dihydrogen dioxide , Oxygenated water , Peroxaan , Hydrogen peroxide (>60% solution in water) , H2O2 , Peroxide , Hydroperoxide , Hydrogen dioxide , High-strength hydrogen peroxide , Hydrogen peroxide (aqueous) show less
  • Appearance: Very light blue color; colorless in solution ; Colourless liquid ; Colorless liquid with a slightly sharp odor. [Note: The pure compound is a crystalline solid below 12°F. Often used in an aqueous solution.]