Pb₃O₄ + 8 HCl → 3 PbCl₂ + Cl₂ + 4 H₂O

This is an oxidation-reduction (redox) reaction:

Pb₃O₄ is an oxidizing agent, HCl is a reducing agent.

Reactants:

• Pb₃O₄ – Lead tetroxide
  • Other names: Lead(II,IV) oxide , Minium , Red lead ... show moreTriplumbic tetroxide , C.I. Pigment Red 105 , Lead orthoplumbate show less
  • Appearance: Vivid orange crystals ; Red crystals or powder
• HCl – Chlorane , Hydrogen chloride
  • Other names: Hydrochloric acid , M , Uriatic acid ... show moreHydronium chloride , Chlorhydric Acid , Hydrochloric acid gas , HCl , Anhydrous hydrogen chloride , Hydrochloric acid, anhydrous , Aqueous hydrogen chloride , [Note: Often used in an aqueous solution.] show less
  • Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]

Products:

• PbCl₂ – Lead(II) chloride , Lead dichloride
  • Other names: Plumbous chloride , Cotunnite , Lead chloride ... show moreLead(2+) chloride , PbCl2 show less
  • Appearance: White odorless solid
• Cl₂
  • Names: Chlorine , Molecular chlorine
  • Appearance: Greenish-yellow compressed liquefied gas with pungent odour ; Greenish-yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]
• H₂O – Water, oxidane
  • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide ... show moreDihydrogen monoxide (DHMO) (systematic name) , Hydrogen monoxide , Dihydrogen oxide , Hydric acid , Hydrohydroxic acid , Hydroxic acid , Hydrol , Μ-oxido dihydrogen , Κ1-hydroxyl hydrogen(0) show less
  • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas