ZnS + 2 HCl → ZnCl2 + H2S – Balanced equation

Reactants:

• ZnS
  • Names: Zinc sulfide , Zincblende , Wurtzite
  • Appearance: White-to-yellow crystals or powder
• HCl – Chlorane , Hydrogen chloride
  • Other names: Hydrochloric acid , M , Uriatic acid
  • 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:

• ZnCl₂ – Zinc chloride
  • Other names: Zinc(II) chloride , Zinc dichloride , Butter of zinc
  • Appearance: White crystalline solid | hygroscopic and very deliquescent ; White hygroscopic odourless solid in various forms ; White particulate dispersed in air.
• H₂S – Hydrogen sulfide
  • Other names: D , Ihydrogen monosulfide|Dihydrogen sulfide|Sewer gas|Sulfane|Sulfurated hydrogen|Sulfureted hydrogen|Sulfuretted hydrogen|Sulfur hydride|Hydrosulfuric acid|Hydrothionic acid|Thiohydroxic acid|Sulfhydric acid}} , Hydrosulfuric acid
  • Appearance: Colorless gas ; Colourless compressed liquefied gas with characteristic odour of rotten eggs ; Colorless gas with a strong odor of rotten eggs. [Note: Sense of smell becomes rapidly fatigued & can NOT be relied upon to warn of the continuous presence of H2S. Shipped as a liquefied compressed gas.]