How to write the chemical equation of calcium carbonate

The 3 in the above formula of caco3 should be the subscript.

1. Heating calcium carbonate to 900 at one atmosphere will decompose into calcium oxide and carbon dioxide.

2. Calcium carbonate will react with dilute hydrochloric acid, which will be effervexing, and generate calcium chloride, water and carbon dioxide.

3. Excess carbon dioxide is introduced into the calcium carbonate suspension, which will generate calcium bicarbonate solution.

4. Calcium carbonate reacts with carbonic acid solution (rainwater) to generate calcium bicarbonate.

5. Calcium hydroxide is introduced into carbon dioxide to produce calcium carbonate and water.

Equation: Caco +2HCl=CaCl +H O+CO Ion Equation: Caco +2H=CA +H O+CO It can also be used in the laboratory to produce carbon dioxide and identify and determine halogens in organic synthesis reactions.

Water analysis. Phosphorus is verified. Breaks down silicates together with ammonium chloride.

Calcium chloride solution is prepared to standardize the soap solution. Manufacture of optical neodymium glass raw materials and coating raw materials.

The chemical formula of calcium carbonate is caco, and I have also sorted out the chemical equation of calcium carbonate, so that friends can use their spare time to consolidate their knowledge.

CaCO3==CaO+CO2 (high temperature).

CaCO3+2HCl=CaCl2+H2O+CO2 2Hno3+CaCO3=Ca(NO3)2+H2O+CO2 H2SO4+CaCO3=CaSO4+H2O+CO2 CO2+CaCO3+H2O=Ca(HCO3)2CO2+Ca(OH)2=CaCO3 +H2OCA(OH)2+Na2CO3===CaCO3 +2NaOH+O2 ignite CO2

C+2CuO, high temperature, 2Cu+CO2

3C+2Fe2O3, high temperature, 4Fe+3CO2

C+O2 ignites CO2

CO2+C high temperature 2CO

2CO+O2 ignites 2CO2

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Calcium carbonateChemical formula CaCO3.

Calcium carbonate is white solid with a finch body, tasteless, odorless, and has two forms: amorphous and crystalline.

Valency. with the outermost number of electrons of the atom.

Related, valency is determined by people according to the number of electrons in the outermost shell, so you need to remember the valency, and then you can write the chemical formula with the valency, and then remember some special rules for writing the chemical formula.

Industrial use

Calcium carbonate is a valuable resource for a wide range of uses, and limestone is the trade name for a mineral raw material. In the history of human civilization, limestone has been widely used because of its wide distribution in nature and easy access.

As an important building material has a long history of mining, in modern industry, limestone is used to make cement, lime, calcium carbide.

The main raw material is the indispensable flux limestone in the metallurgical industry, and high-quality limestone is widely used in papermaking after ultra-fine grinding.

In the manufacture of rubber, paints, coatings, medicines, cosmetics, feed, sealing, bonding, polishing and other products. According to incomplete statistics, the ratio of limestone consumed in cement production to the sum of limestone and building stone, lime production, Bijing metallurgical flux, and ultrafine calcium carbonate is 1 3.

Limestone is a non-renewable resource.

With the continuous progress of science and technology and nanotechnology.

The development of limestone, the application field of limestone will be further broadened.

The above content reference: Encyclopedia - calcium carbonate.

The most important chemical equations involving calcium carbonate in junior high school are three, one is that calcium carbonate reacts with dilute hydrochloric acid to produce calcium chloride, water and carbon dioxide.

One is the high temperature decomposition of calcium carbonate to produce calcium oxide and water, and the other is the reaction of carbon dioxide with clarified lime water to form calcium carbonate and water, CaCO3 + 2HCl == CaCl2 + H2 O + CO2 CaCO3 High temperature ==CA2 + CO2 Ca(OH)2 + CO2 === CaCO3 +H2 O

ca(hco₃)₂

Relative molecular mass, calcium carbonate is dissolved in carbonic acid to form calcium bicarbonate. Evaporation of calcium bicarbonate solution yields calcium carbonate solids. Soluble in water, thermal decomposition; Positive salts are formed with alkalis.

When calcium carbonate encounters carbon dioxide and water, chemical attack occurs to generate soluble calcium bicarbonate, which produces the phenomenon of "water droplets and stones" over time, the equation: CACO +CO +H O==CA(HCO).

The chemical formula of calcium bicarbonate is Ca(HCO3)2.

Calcium bicarbonate is an inorganic acid salt. Soluble in water, chemical formula, relative molecular mass, calcium bicarbonate can be obtained by the reaction of sodium bicarbonate and calcium salts that are easily soluble in water. Calcium bicarbonate is relatively stable below 0 degrees Celsius; At room temperature, it decomposes to obtain calcium carbonate solids.

First, calcium carbonate is easy to decompose at high temperatures.

CaCO3 = Cao ten CO2 (high temperature).

Second, calcium carbonate reacts with water and carbon dioxide.

CaCO3 ten CO2 ten H2O = Ca(HCO3)2 three, calcium carbonate reacts with acid.

CaCO3 ten 2 HCl = CaCl2 ten H2O ten CO2

Calcium carbonate is an alkaline carbonate that can react with acids, such as hydrochloric acid

CaCO3 + 2HCl = CACl2 + CO2 (gas symbol) + H2O

Equation: CACO +2HCl=CACL +H O+CO Ion Equation: CACO +2H=CA +H O+CO It can also be used to prepare carbon dioxide in Chongqing laboratory and to characterize and determine halogens in organic chemical reactions.

Water analysis. Phosphorus is verified. Breaks down silicates together with ammonium chloride.

Calcium chloride solution is prepared to standardize the soap solution. Manufacture of optical neodymium glass raw materials and coating raw materials.

The chemical equation for the reaction of calcium carbonate with dilute sulfuric acid is: CaCO3+H2SO4==CaSO4+H2O+CO2

Analysis: Since calcium sulfate, the product of this reaction, is slightly soluble in water, the reaction cannot be sustained. The calcium carbonate in the reactant is insoluble, while the calcium sulfate in the product is slightly soluble, so the calcium sulfate does not need to be precipitated.

Storage method of calcium carbonate:1. Food-grade plastic bags are wrapped in woven bags.

2. Store in a cool, dry and ventilated place. Can be stored sealed at (25, 100 kpa).

3. Do not store with toxic chemicals and liquid acids. Pay attention to moisture.

The above content reference: Encyclopedia - calcium carbonate.