KOH + HNO3 → KNO3 + H2O – Balanced equation

Or you want a quick look:

This is an acid-base reaction (neutralization): KOH is a base, HNO3 is an acid.


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  • KOHPotassium hydroxide
    • Other names: Caustic potash , Lye , Potash lye
    • Appearance: White solid, deliquescent ; White hygroscopic solid in various forms ; Odorless, white or slightly yellow lumps, rods, flakes, sticks, or pellets. [Note: May be used as an aqueous solution.]
  • 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.]


  • KNO3Potassium nitrate
    • Other names: Saltpeter , Saltpetre , Nitrate of potash
    • Appearance: White solid ; Colourless-to-white crystalline powder
  • 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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