2 KHCO3 + H2SO4 → K2SO4 + 2 CO2 + 2 H2O – Balanced equation

Or you want a quick look:

This is an acid-base reaction (neutralization): KHCO3 is a base, H2SO4 is an acid.

This is a gas evolution reaction, CO2 is the formed gas.


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  • KHCO3Potassium hydrogen carbonate
    • Other names: Potassium bicarbonate , Potassium acid carbonate , KHCO3
    • Appearance: White crystals
  • H2SO4Sulfuric acid
    • Other names: Oil of vitriol , Sulfuric acid, concentrated (> 51% and , H2SO4
    • Appearance: Clear, colorless liquid ; Odourless colourless oily hygroscopic liquid ; Colorless to dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.]


  • K2SO4
    • Names: Potassium sulfate , Potassium sulphate , Dipotassium sulfate
    • Appearance: White solid ; Colourless-to-white crystals
  • 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.]
  • 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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