Chemical Equation Balancer CrO + O2 = Cr2O3

Balanced Chemical Equation

4CrO + O2 = 2Cr2O3

Reaction Information

Chromium(II) Oxide + Dioxygen = Dichromium Trioxide
Reaction Type


  • Chromium(II) Oxide (CrO)
  • Dioxygen (O2)
    O2 O₂ Oxygen Gas Oxygen Molecular Oxygen Oxygen O-17
  • Dichromium Trioxide (Cr2O3)
    Green Oxide Of Chromium Green Chromium Oxide Chromium(III) Sesquioxide Chromium Sesquioxide Chromia Chromium Oxide Chromium(III) Oxide


To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The balanced equation will appear above.

  • Use uppercase for the first character in the element and lowercase for the second character. Examples: Fe, Au, Co, Br, C, O, N, F.
  • Ionic charges are not yet supported and will be ignored.
  • Replace immutable groups in compounds to avoid ambiguity. For example, C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will.
  • Compound states [like (s) (aq) or (g)] are not required.
  • You can use parenthesis () or brackets [].

How To Balance Equations

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