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Carbonate is an anion with a charge of -2 and an empirical formula of CO₃^2-.

For an aqueous solution, carbonate exists in three forms. In strongly basic conditions, the carbonate ion, CO₃^2-, predominates. In weakly basic conditions, bicarbonate ion, HCO₃^- is prevalent. In acid conditions, aqueous carbon dioxide, CO₂(aq), is the main form. This also contains a minute amount of carbonic acid, H₂CO₃. Thus sodium carbonate is basic, sodium bicarbonate is weakly basic, while carbon dioxide itself is a weak acid.

In biological systems the enzyme, carbonic anhydrase, catalyzes this interconversion between carbon dioxide and carbonate ions. To test for the presence of the carbonate anion in a salt, the addition of dilute hydrochloric acid will yield carbon dioxide gas.

Carbonate-containing salts are industrially and minerologically ubiquitous. The term "carbonate" is also commonly used to refer to one of these salts. Most common is limestone, or calcium carbonate. The process of removing these salts is called calcination.

The term is also used as a verb, to describe the process of raising carbonate and bicarbonate concentrations in water, see also carbonated water, either by the introduction under pressure of carbon dioxide gas into the water, or by dissoving carbonate or bicarbonate salts into the water.

At one time, it was thought that the presence of carbonates in rock was unequivocal evidence for the presence of liquid water. Recent observations of two planetary nebulae reported in the January 17, 2002 issue of the scientific journal Nature indicate that carbonates can form in interplanetary space.

Carbonates were detected in the Gusev Crater on Mars by the Mars Exploration Rover Spirit on January 9, 2004. [1]

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+'''Carbonate''' is an [[anion]] with a charge of -2 and an [[empirical formula]] of CO<sub>3</sub><sup>2-</sup>.
-{{protected}}
+For an [[aqueous solution]], carbonate exists in three forms. In strongly basic conditions, the carbonate ion, CO<sub>3</sub><sup>2-</sup>, predominates. In weakly basic conditions, [[bicarbonate]] ion, HCO<sub>3</sub><sup>-</sup> is prevalent. In acid conditions, aqueous [[carbon dioxide]], CO<sub>2</sub>(aq), is the main form. This also contains a minute amount of [[carbonic acid]], H<sub>2</sub>CO<sub>3</sub>. Thus [[sodium carbonate]] is basic, [[sodium bicarbonate]] is weakly basic, while carbon dioxide itself is a weak acid.
-Carbonate
+In biological systems the [[enzyme]], [[carbonic anhydrase]], [[catalyzes]] this interconversion between carbon dioxide and carbonate ions. To test for the presence of the carbonate anion in a salt, the addition of dilute [[hydrochloric acid]] will yield carbon dioxide gas.
-A carbonate is really a mind controling device implanted into science by the Freemasons. It is mainly a plot to control the world's carbonic acid, which is in soft drinks. If you look at CO32-, the 2- means two minds, and the CO represents CO from COca COla - showing nothing but the fact that Coca Cola is in it with the freemasons in controlling the world through their delicious soft drinks. I have the urge to now go and consume some delicious coca cola. just another sign that those evil freemasons are going to control us one day, and they are already controlling us through coke. Save yourselves! - Drink Pepsi!
+Carbonate-containing [[salt]]s are industrially and minerologically
-Formula for making CO23-
+ubiquitous.  The term "carbonate" is also commonly used to
+refer to one of these salts. Most common is [[limestone]], or calcium carbonate.  The process of removing these salts is called [[calcination]].
+The term is also used as a verb, to describe the process of
-sin((1(1 − z2)) / z)xbx + bxtan(b) + 1 / PIf2(x)dx = a(0)2 / 2 + (k = 1..)(a(k)2 + b(k)2)
+raising carbonate and [[bicarbonate]] concentrations in water, see also [[carbonated water]], either by the introduction under pressure of [[carbon dioxide]] gas into the water, or by dissoving carbonate or bicarbonate salts into the water.
+At one time, it was thought that the presence of carbonates in [[Rock (geology)|rock]] was unequivocal evidence for the presence of liquid water. Recent observations of two [[planetary nebula]]e reported in the [[January 17]], [[2002]] issue of the scientific journal [[Nature (journal)|''Nature'']] indicate that carbonates can form in interplanetary space.
-Handy Hints
+Carbonates were detected in the [[Gusev Crater]] on Mars by the [[Mars Exploration Rover]] ''Spirit'' on [[January 9]], [[2004]]. [http://www.jpl.nasa.gov/mer2004/rover-images/jan-09-2004/captions/image-10.html]
-. Jism? Just add water and taste the carbonated difference!
+[[Category:Oxyanions]]
-. Carbonic Acid is quite enjoyable at a concentration of 30 Molar or higher! Nice tingling feeling in the throat and stomach. :)
+[[Category:Salts]]
+[[da:Karbonat]]
+[[de:Carbonat]]
+[[eo:Karbonato]]
+Carbonate
+[[lv:Karbon&#257;ti]]
+[[nl:carbonaat]]
+[[ja:&#28845;&#37240;&#22633;]]
+[[pl:W&#281;glany]]