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2006-10-18 20:12:55 · 9 answers · asked by Chinmay 1 in Science & Mathematics Chemistry

9 answers

A substance treated with carbon dioxide, such as limestone
Calcium carbonate is a chemical compound, with chemical formula CaCO3. It is commonly used medicinally as a calcium supplement or as an antacid. Calcium carbonate is the active ingredient in agricultural lime. It is a common substance found as rock in all parts of the world and is the main component of seashells and the shell of snails. It is usually the principal cause of hard water.

2006-10-18 20:14:43 · answer #1 · answered by dandyl 7 · 3 2

To charge (a beverage, for example) with carbon dioxide gas.
To burn to carbon; carbonize.
To change into a carbonate
A salt or an ester of an carbonic acid.

2006-10-18 20:28:04 · answer #2 · answered by veerabhadrasarma m 7 · 0 0

Carbonates means any element with - CO3 group
for example Calcium Carbonate CaCO3

2006-10-18 20:15:34 · answer #3 · answered by Anonymous · 0 0

car·bon·ate (kär'bə-nāt')
tr.v., -at·ed, -at·ing, -ates.
To charge (a beverage, for example) with carbon dioxide gas.
To burn to carbon; carbonize.
To change into a carbonate.
n. (-nāt', -nĭt)
A salt or an ester of an carbonic acid.

2006-10-18 20:16:14 · answer #4 · answered by Anonymous · 0 0

a carbonate is a salt of carbonic acid.

2006-10-18 20:57:41 · answer #5 · answered by Anonymous · 0 0

In inorganic chemistry, a carbonate is a salt of carbonic acid.

Chemical properties
The carbonate ion is a polyatomic anion with the empirical formula CO32− and a molecular mass of 60.01 daltons; it consists of one central carbon atom surrounded by three identical oxygen atoms in a trigonal planar arrangement. The carbonate ion carries a negative two formal charge and is the conjugate base of the hydrogencarbonate ion, HCO3−, which is the conjugate base of H2CO3, carbonic acid.

A carbonate salt forms when a positively charged ion attaches to the negatively charged oxygen atoms of the ion, forming an ionic compound. Most carbonate salts are insoluble in water at standard temperature and pressure, with solubility constants of less than 1×10−8. Exceptions include sodium, potassium and ammonium carbonates.

In aqueous solution, carbonate, bicarbonate, carbon dioxide, and carbonic acid exist together in a dynamic equilibrium. In strongly basic conditions, the carbonate ion predominates, while in weakly basic conditions, the bicarbonate ion is prevalent. In more acid conditions, aqueous carbon dioxide, CO2(aq), is the main form, which, with water, H2O, is in equilibrium with carbonic acid - the equilibrium lies strongly towards carbon dioxide. Thus sodium carbonate is basic, sodium bicarbonate is weakly basic, while carbon dioxide itself is a weak acid.

Carbonated water is formed by dissolving CO2 in water under pressure. When the partial pressure of CO2 is reduced, for example when a can of soda is opened, the equilibrium for each of the forms of carbonate (carbonate, bicarbonate, carbon dioxide, and carbonic acid) shifts until the concentration of CO2 in the solution is equal to the solubility of CO2 at that temperature and pressure. In living systems an enzyme, carbonic anhydrase, speeds the interconversion of CO2 and carbonic acid.

In organic chemistry a carbonate can also refer to a functional group within a larger molecule that contains a carbon atom bound to three oxygen atoms, one which is double bonded. The VSEPR shape of the carbonate ion is trigonal planar.

Carbonate-containing salts are industrially and mineralogically ubiquitous. The term "carbonate" is also commonly used to refer to one of these salts or carbonate minerals. Most common is calcite, or calcium carbonate, the chief constituent of limestone. The process of removing carbon dioxide from these salts by heating is called calcination.

2006-10-18 20:24:48 · answer #6 · answered by Anonymous · 0 1

In inorganic chemistry, a carbonate is a salt of carbonic acid.

Applications
Soda water (also known as Seltzer water) is water with CO2 dissolved under pressure. The pleasant taste of soda water was discovered by the 18th century chemist Joseph Priestley.

To test for the presence of the carbonate anion in a salt, the addition of dilute mineral acid (e.g. hydrochloric acid) will yield carbon dioxide gas.

Carbonate-containing salts are industrially and mineralogically ubiquitous. The term "carbonate" is also commonly used to refer to one of these salts or carbonate minerals. Most common is calcite, or calcium carbonate, the chief constituent of limestone. The process of removing carbon dioxide from these salts by heating 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 dissolving carbonate or bicarbonate salts into the water.

Chemical properties
The carbonate ion is a polyatomic anion with the empirical formula CO32− and a molecular mass of 60.01 daltons; it consists of one central carbon atom surrounded by three identical oxygen atoms in a trigonal planar arrangement. The carbonate ion carries a negative two formal charge and is the conjugate base of the hydrogencarbonate ion, HCO3−, which is the conjugate base of H2CO3, carbonic acid.

A carbonate salt forms when a positively charged ion attaches to the negatively charged oxygen atoms of the ion, forming an ionic compound. Most carbonate salts are insoluble in water at standard temperature and pressure, with solubility constants of less than 1×10−8. Exceptions include sodium, potassium and ammonium carbonates.

In aqueous solution, carbonate, bicarbonate, carbon dioxide, and carbonic acid exist together in a dynamic equilibrium. In strongly basic conditions, the carbonate ion predominates, while in weakly basic conditions, the bicarbonate ion is prevalent. In more acid conditions, aqueous carbon dioxide, CO2(aq), is the main form, which, with water, H2O, is in equilibrium with carbonic acid - the equilibrium lies strongly towards carbon dioxide. Thus sodium carbonate is basic, sodium bicarbonate is weakly basic, while carbon dioxide itself is a weak acid.

Carbonated water is formed by dissolving CO2 in water under pressure. When the partial pressure of CO2 is reduced, for example when a can of soda is opened, the equilibrium for each of the forms of carbonate (carbonate, bicarbonate, carbon dioxide, and carbonic acid) shifts until the concentration of CO2 in the solution is equal to the solubility of CO2 at that temperature and pressure. In living systems an enzyme, carbonic anhydrase, speeds the interconversion of CO2 and carbonic acid.

In organic chemistry a carbonate can also refer to a functional group within a larger molecule that contains a carbon atom bound to three oxygen atoms, one which is double bonded. The VSEPR shape of the carbonate ion is trigonal planar.

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2006-10-19 00:31:30 · answer #7 · answered by catzpaw 6 · 0 0

car‧bon‧ate  /n. ˈkɑrbəˌneɪt, -nɪt; v. ˈkɑrbəˌneɪt/ Pronunciation Key - Show Spelled Pronunciation[n. kahr-buh-neyt, -nit; v. kahr-buh-neyt] Pronunciation Key - Show IPA Pronunciation noun, verb, -at‧ed, -at‧ing.

–noun 1. a salt or ester of carbonic acid.
–verb (used with object) 2. to form into a carbonate.
3. to charge or impregnate with carbon dioxide: carbonated drinks.
4. to make sprightly; enliven.

2006-10-18 20:15:45 · answer #8 · answered by Anonymous · 0 1

carbonate is CO3

2006-10-18 21:31:20 · answer #9 · answered by ? 3 · 0 0

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