Chemical Equation Balancer HgS + HCl + HNO3 = HgCl2 + S + H2O + NO

Balanced Chemical Equation

3HgS + 6HCl + 2HNO3 = 3HgCl2 + 3S + 4H2O + 2NO

Reaction Information

Cinnabar + Hydrochloric Acid + Hydrogen Nitrate = Mercury(ii) Chloride + Sulfur + Water + Nitric 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.