Potassium Bicarbonate, Formula, Preparation Method, Chemical Properties

Potassium Bicarbonate

Potassium bicarbonate is an inorganic compound that is used to manufacturing the soap and glass. It is called as the pearl ash and carbonate potash. It is a hygroscopic and odourless and same as the alkaline. It is insoluble in acetone and readily soluble in water. The systematic IUPAC name is known as potassium hydrogencarbonate. The chemical or molecular formula of potassium bicarbonate is KHCO3 . The other names is potassium acid carbonate.

Structural Formula

This is the structural formula of the potassium bicarbonate:

Potassium Bicarbonate

Chemical Formula

The chemical formula of the potassium bicarbonate is KHCO3.

Preparation Method

When the potassium carbonate is reacted with the carbon dioxide and water,  it gives the results of potassium bicarbonate.

K2C03 + CO2 + H20 → 2 KHCO3

It can be substitute for baking soda and ingredient low sodium baking powders. It should be an expensive and nontoxic base. it has decomposed at the high level temperatures such as 100 and 120C.

Learn More:   Potassium Oxide, Formula, Chemical Properties, Preparation, Uses

2KHCO3 → K2C03 + CO2 + H2

Physical Properties

Melting point 292C
Boiling point 881.4C
Molecular weight 105.115g/mol
Density 2.17g/cm3
Solubility in water 22.4g/100mL(20C)
Solubility Practically insoluble in alcohol
Acidity 10.329
Appearance White crystals


Chemical Properties

It is mainly used in the reagent materials and especially in the condensed aerosol fire suppression. It regulates the ph level of the toxic gases. It is a non inflammable substances. The effect of effervescence should be soften the chemical compounds and increased to the taste of baking soda.


Potassium bicarbonate is a leavening agent in baking processes to liberate the carbon-dioxide. It is a dry chemical used in fire extinguishers. It has a several applications in ph regulation. It is mainly used in agricultural field to neutralize the acidic solids. It is also used in wine making. It is also a buffering agent to control the Ph of several medications.


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