Cr2O3 + 6 HCl → 2 CrCl3 + 3 H2O – Balanced equation

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Reactants:

  • Cr2O3
    • Names: Chromium(III) oxide , Chromium sesquioxide , Chromia
    • Appearance: Light to dark green, fine crystals ; Light-to-dark-green powder
  • HClChlorane , 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.]

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  • CrCl3Chromium(III) chloride , Chromium trichloride
    • Other names: Chromic chloride , Chromium(iii) chloride (anhydrous) , Chromium(3+) trichloride
    • Appearance: Purple (anhydrous), dark green (hexahydrate) ; Violet crystals
  • H2OWater, oxidane
    • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide
    • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas
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