Chemical Equation Balancer CaCO3 + Ca(OH)2 = H2CO3 + CaO

Balanced Chemical Equation

CaCO3 + Ca(OH)2 = H2CO3 + 2CaO

Reaction Information

Calcium Carbonate + Calcium Hydroxide = Carbonic Acid + Calcium Oxide
  • Calcium Carbonate (CaCO3)
    Sau Aragonite Satin Spar Vaterite Calcite CaCO3 E 170
  • Calcium Hydroxide (Ca(OH)2)
    Slaked Lime Calcium Hydrate Caustic Lime Hydrated Lime Ca(OH)2 Hydralime Portlandite
  • Carbonic Acid (H2CO3)
    Performic Acid H2CO3 [CO(OH)2] Acid Of Air Aerial Acid
  • Calcium Oxide (CaO)
    Caustic Lime Quicklime Calx Calcium Monoxide Limestone Burned Lime Burnt Lime Lime Pebble Lime Quick Lime Unslaked Lime Lime (mineral) Lime 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

Read our article on how to balance chemical equations or ask for help in our chat.

You can also ask for help in our forums.