Chemical Equation Balancer CuI + Na2S2O3 = Na3(Cu(S2O3)2) + NaI

Balanced Chemical Equation

CuI + 2Na2S2O3 = Na3(Cu(S2O3)2) + NaI

Reaction Information

  • Copper(i) Iodide (CuI)
  • Sodium Thiocyanate (Na2S2O3)
    Sodium Thiosulfate
  • Na3(Cu(S2O3)2)
  • Sodium Iodide (NaI)


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.