CaCO3 + 2 HNO3 → H2O + CO2 + Ca(NO3)2 – Balanced equation

Or you want a quick look:

This is an acid-base reaction (neutralization): CaCO3 is a base, HNO3 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
  • HNO3Nitric acid
    • Other names: Aqua fortis , Spirit of niter , Eau forte
    • Appearance: Colorless, yellow or red fuming liquid ; Colourless-to-yellow liquid with pungent odour ; Colorless, yellow, or red, fuming liquid with an acrid, suffocating odor. [Note: Often used in an aqueous solution. Fuming nitric acid is concentrated nitric acid that contains dissolved nitrogen dioxide.]


  • 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.]
  • Ca(NO3)2
    • Names: Calcium nitrate , Kalksalpeter , Nitrocalcite
    • Appearance: Colorless solid | hygroscopic ; Colourless-to-white hygroscopic crystals
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