What is Potassium Bicarbonate?

Potassium bicarbonate is a chemical compound with the formula KHCO3.

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the is comprised of a potassium cation (K+) and a bicarbonate anion (HCO3–).

The IUPAC name of this link is potassium hydrogen carbonate. Under standard conditions, potassium bicarbonate exists together a white solid.


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Potassium Bicarbonate


KHCO3 is a monopotassium salt of H2CO3 (carbonic acid). Similar to salt bicarbonate (baking soda), potassium bicarbonate is alkaline in nature. The is widely offered as an antacid since it has actually the ability to neutralize gastric acid.

Potassium Bicarbonate Structure

Potassium bicarbonate molecules attribute an ionic bond in between K+ and HCO3– ions. The structure of a KHCO3 molecule is portrayed below.

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The bicarbonate ion is developed when carbonic acid undergoes deprotonation. This polyatomic ion consists of a central carbon atom which is chemically external inspection to three oxygen atoms. One of these oxygen atoms is external inspection to a hydrogen atom. The negative charge of magnitude -1 is delocalized with the continuing to be oxygen atoms as result of resonance.

Potassium Bicarbonate Preparation

When an aqueous solution of K2CO3 (potassium carbonate) is treated through carbon dioxide gas, KHCO3 is formed. The chemical equation because that this reaction is given by:

CO2 + K2CO3 + H2O → 2KHCO3

The traditional enthalpy of development for this compound synchronizes to -963.2 kilojoules every mole. Once heated to 120oC, potassium bicarbonate starts to undergo a decomposition reaction to yield water, carbon dioxide, and also potassium carbonate.

Properties that KHCO3

1. Chemistry Data


Potassium BicarbonateKHCO3
Molar Mass100.115 grams every mole
Density2.17 grams every cubic centimeter
Melting Point292oC (Starts come Decompose in ~ 100oC)
Boiling PointDecomposes

2. Physical Properties

At room temperature, KHCO3 exist in the type of white crystals.This compound does no have any kind of distinct odour and also is considered to be odourless.At a temperature the 20oC, potassium bicarbonate has a solubility that 22.4g/100mL in water.The acidity the this compound coincides to 10.329.

3. Chemistry Properties

The chemistry equation for this reaction is: HCl + KHCO3 → KCl + CO2 + H2OThis link is insoluble in alcohols and also most other organic solvents.

What room the provides of Potassium Bicarbonate?

Potassium bicarbonate is widely supplied in organic agriculture in bespeak to regulate powdery mildew. Some other applications the this compound are detailed below.

This link is used as a leavening certified dealer in baking processes since it have the right to liberate carbon dioxide.Several dried chemical fire extinguishers usage KHCO3 as a component.Since it is inexpensive, non-toxic, and alkaline, potassium bicarbonate has several applications in pH regulation.It is provided as a buffering agent to control the pH of numerous medications.It is also added as an additive in the process of winemaking because it helps regulate the pH.In order to improve the taste of society soda, KHCO3 deserve to be included to it.This link can additionally be supplied to neutralize acidic soils to encourage agriculture.


Potassium is a mineral the is had naturally in food, and also is important for numerous of the body’s normal functions, an especially beating that the heart. Potassium bicarbonate is supplied to avoid or act a deficit that potassium (hypokalaemia).


No, baking soda is made up of salt bicarbonate. However, potassium bicarbonate can be provided as an alternate to baking soda since it has actually the exact same leavening capabilities, but it does no contain any type of sodium.


Potassium bicarbonate have the right to be supplied as one antacid, electrolyte replenisher and as a complement for potassium. The can likewise be supplied in medication formulations together an excipient. The antacid potential of potassium bicarbonate is achieved by neutralizing hydrochloric acid by enhancing the gastrointestinal pH.


The ion K+ and HCO3– kind an ionic bond in potassium bicarbonate molecules. A KHCO3 molecule’s structure is illustrated below. Once carbonic acid is deprotonated, the bicarbonate ion is formed. A main carbon atom is chemically tied to 3 oxygen atom in this polyatomic ion.

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To learn an ext about potassium bicarbonate and also other potassium compounds (such as potassium permanganate), register with BYJU’S and download the mobile applications on her smartphone.


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