16.1 g/100 mL (0 °C) 16.6 g/100 mL (20 °C) 18.5 g/100 mL (100 °C) [citation needed]
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Irritant
Flash point
Non-flammable
Related compounds
Other cations
Magnesium bicarbonate
Related compounds
Sodium bicarbonate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Chemical compound
Calcium bicarbonate, also called calcium hydrogencarbonate, has the chemical formula Ca(HCO3)2. The term does not refer to a known solid compound; it exists only in aqueous solution containing calcium (Ca2+), bicarbonate (HCO− 3), and carbonate (CO2− 3) ions, together with dissolved carbon dioxide (CO2). The relative concentrations of these carbon-containing species depend on the pH; bicarbonate predominates within the range 6.36–10.25 in fresh water.
All waters in contact with the atmosphere absorb carbon dioxide, and as these waters come into contact with rocks and sediments they acquire metal ions, most commonly calcium and magnesium, so most natural waters that come from streams, lakes, and especially wells, can be regarded as dilute solutions of these bicarbonates. These hard waters tend to form carbonate scale in pipes and boilers, and they react with soaps to form an undesirable scum.
Attempts to prepare compounds such as solid calcium bicarbonate by evaporating its solution to dryness invariably yield instead the solid calcium carbonate:[1]
Ca(HCO3)2(aq) → CO2(g) + H2O(l) + CaCO3(s).
Very few solid bicarbonates other than those of the alkali metals (other than ammonium bicarbonate) are known to exist.[clarification needed]
The above reaction is very important to the formation of stalactites, stalagmites, columns, and other speleothems within caves, and for that matter, in the formation of the caves themselves. As water containing carbon dioxide (including extra CO2 acquired from soil organisms) passes through limestone or other calcium carbonate-containing minerals, it dissolves part of the calcium carbonate, hence becomes richer in bicarbonate. As the groundwater enters the cave, the excess carbon dioxide is released from the solution of the bicarbonate, causing the much less soluble calcium carbonate to be deposited.
In the reverse process, dissolved carbon dioxide (CO2) in rainwater (H2O) reacts with limestone calcium carbonate (CaCO3) to form soluble calcium bicarbonate (Ca(HCO3)2). This soluble compound is then washed away with the rainwater. This form of weathering is called carbonation and carbonatation.
In medicine, calcium bicarbonate is sometimes administered intravenously to immediately correct the cardiac depressor effects of hyperkalemia by increasing calcium concentration in serum, and at the same time, correcting the acid usually present.
^"Baking Soda". Archived from the original on 2000-09-29.
and 29 Related for: Calcium bicarbonate information
Calciumbicarbonate, also called calcium hydrogencarbonate, has the chemical formula Ca(HCO3)2. The term does not refer to a known solid compound; it exists...
for the reaction. Calcium carbonate reacts with water that is saturated with carbon dioxide to form the soluble calciumbicarbonate. CaCO3(s) + CO2(g)...
Sodium bicarbonate (IUPAC name: sodium hydrogencarbonate), commonly known as baking soda or bicarbonate of soda, is a chemical compound with the formula...
limestone, chalk or gypsum, which are largely made up of calcium and magnesium carbonates, bicarbonates and sulfates. Drinking hard water may have moderate...
consists mainly of calcium carbonate (CaCO3). Hard water contains calcium (and often magnesium) bicarbonate or similar ions. Calcium, magnesium, and carbonate...
Magnesium bicarbonate or magnesium hydrogencarbonate, Mg(HCO3)2, is the bicarbonate salt of magnesium. It can be formed through the reaction of dilute...
with low blood calcium level. Sodium bicarbonate is in the alkalinizing family of medications. It works by increasing blood bicarbonate, which buffers...
the concentration of dissolved calcium bicarbonate builds up, the calciumbicarbonate begins to revert to calcium carbonate, water, and carbon dioxide....
Calcium is a chemical element; it has symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride...
+ H2O(l) + CO2(g) → Ca(HCO3)2(aq) The milkiness disappears since calciumbicarbonate is water-soluble. The above chemical properties are commonly used...
carbonation: the process of raising the concentrations of carbonate and bicarbonate ions in water to produce carbonated water and other carbonated beverages –...
including bicarbonate, citrate, phosphate, and sulfate. Different tissues contain calcium in different concentrations. For instance, Ca2+ (mostly calcium phosphate...
values. This allows calcium carbonate to dissolve as bicarbonate. Where rainfall is adequate but not excessive, the calciumbicarbonate is carried down into...
carbonic acid, a weak acid, which dissolves calcium carbonate (limestone) and forms soluble calciumbicarbonate. Despite a slower reaction kinetics, this...
sodium bicarbonate is the commonly preferred alkalinizing agent. Others include potassium citrate, calcium carbonate, sodium lactate and calcium acetate...
cuisine, largely because it is a stronger base than baking soda (sodium bicarbonate) but weaker than lye (which may refer to sodium hydroxide or, less commonly...
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in the carbonic acid to bicarbonate ion ratio. The bicarbonate buffer system regulates the ratio of carbonic acid to bicarbonate to be equal to 1:20, at...
contact with underground marble and partially dissolves creating calciumbicarbonate. When the water runs above ground, the excess minerals fall out....
which is dissolved by water that contains carbon dioxide, forming a calciumbicarbonate solution in caverns. The chemical formula for this reaction is: CaCO3(s)...
which is dissolved by water that contains carbon dioxide, forming a calciumbicarbonate solution in caverns. The partial pressure of carbon dioxide in the...
neutral perlite can be added to improve porosity. Due to the risk of calciumbicarbonate, tap water is unsuitable. Rainwater or distilled water mixed with...
with an alkali carbonate ingredient, commonly sodium bicarbonate (baking soda) or potassium bicarbonate, it reacts to produce carbon dioxide and a salt. Outward...
powder is a dry chemical leavening agent, a mixture of a carbonate or bicarbonate and a weak acid. The base and acid are prevented from reacting prematurely...
proximal convoluted tubule. This results in several effects including bicarbonate accumulation in the urine and decreased sodium absorption. Drugs in this...
[Mg2+] activity is regulated by calcium [Ca2+] which increases the affinity for ATP of mammalian sAC. In addition, bicarbonate [HCO−3] releases ATP-Mg2+ substrate...
Carbonation is the chemical reaction of carbon dioxide to give carbonates, bicarbonates, and carbonic acid. In chemistry, the term is sometimes used in place...
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