Cu(OH)2 + 2 HCl → CuCl2 + 2 H2O – Balanced equation

Or you want a quick look:

This is an acid-base reaction (neutralization): Cu(OH)2 is a base, HCl is an acid.


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  • Cu(OH)2Copper(II) hydroxide
    • Other names: Cupric hydroxide , Cu(OH)2
    • Appearance: Blue or blue-green solid
  • 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.]


  • CuCl2
    • Names: Copper(II) chloride , Cupric chloride , Copper chloride
    • Appearance: Yellow-brown solid (anhydrous) | blue-green solid (dihydrate)
  • 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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