CaCO3 + 2 HCl → CaCl2 + H2O + CO2 – Balanced equation

Or you want a quick look:

This is an acid-base reaction (neutralization): CaCO3 is a base, HCl is an acid.


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  • CaCO3Calcium carbonate
    • Other names: Calcite; aragonite; chalk; Lime (material); Limestone; marble; oyster; pearl; , Calcium salt of carbonic acid , Children's Mylanta Upset Stomach Relief
    • Appearance: Fine white powder; chalky taste ; White powder or pellets
  • 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.]


  • CaCl2Calcium chloride
    • Other names: Calcium(II) chloride , Calcium dichloride , E509
    • Appearance: White powder, hygroscopic ; Odourless hygroscopic colourless or white 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
  • CO2
    • Names: Carbon dioxide , {{plainlist| , CO2
    • Appearance: Colorless gas ; Odourless colourless compressed liquefied gas ; Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.]
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