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

Balanced Chemical Equation

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

Reaction Information

Hydrogen Nitrate + Cinnabar + Hydrochloric Acid = Sulfur + Nitric Oxide + Mercury(ii) Chloride + Water
  • Hydrogen Nitrate (HNO3)
    Nitric Acid
  • Cinnabar (HgS)
    Mercury(ii) Sulfide
  • Hydrochloric Acid (HCl)
    Hydrogen Chloride
  • Sulfur (S)
  • Nitric Oxide (NO)
    Nitrogen Monoxide Nitrogen Oxide Nitrogen(ii) Oxide
  • Mercury(ii) Chloride (HgCl2)
  • Water (H2O)


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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