The main chemical properties of carbon dioxide

Before considering the chemical properties of carbon dioxide, we will clarify some of the characteristics of this compound.

General information

Carbon dioxide is an essential component of carbonated water. It is he who gives the drinks freshness, sparkling. This compound is an acidic, salt-forming oxide. The relative molecular weight of carbon dioxide is 44 g / mol. This gas is heavier than air, so it accumulates in the lower part of the room. This compound is poorly soluble in water.

Chemical properties

Consider the chemical properties of carbon dioxide briefly. When interacting with water, a weak carbonic acid is formed. It almost immediately after formation dissociates into hydrogen cations and anions of carbonate or bicarbonate. The resulting compound interacts with the active metals, oxides, and also with alkalis.

What are the main chemical properties of carbon dioxide? The reaction equations confirm the acidity of this compound. Carbon monoxide (4) is able to form carbonates with basic oxides.

Physical properties

Under normal conditions this compound is in a gaseous state. When the pressure is increased, it can be converted to a liquid state. This gas is colorless, odorless, has a slight sour taste. Liquefied carbon dioxide is a colorless, transparent, easily mobile acid, similar in its external parameters, ether or alcohol.

The relative molecular weight of carbon dioxide is 44 g / mol. This is almost 1.5 times greater than that of air.

In the case of a drop in temperature to -78.5 degrees Celsius, dry ice forms . It is similar in its hardness to chalk. Upon evaporation of this substance, gaseous carbon monoxide (4) is formed.

Qualitative reaction

Considering the chemical properties of carbon dioxide, it is necessary to distinguish its qualitative reaction. When this chemical reacts with calcareous water (calcium hydroxide) , a cloudy calcium carbonate precipitate is formed.

Cavendish managed to detect such characteristic physical properties of carbon monoxide (4) as solubility in water, as well as high specific gravity.

Lavoisier conducted a chemical experiment, during which he tried to extract pure metal from the oxide of the wine.

The chemical properties of carbon dioxide revealed by these studies have confirmed the reducing properties of this compound. Lavoisier, when calculating lead oxide with carbon monoxide (4), was able to obtain a metal. In order to make sure that the second substance is carbon monoxide (4), it passed lime water through the gas.

All the chemical properties of carbon dioxide confirm the acidity of this compound. In the earth's atmosphere, this compound is contained in sufficient quantities. With a systematic growth in the terrestrial atmosphere of this compound, serious climate change (global warming) is possible.

It is carbon dioxide that plays an important role in the wildlife, because this chemical takes an active part in the metabolism of living cells. It is this chemical compound that is the result of a variety of oxidative processes associated with the respiration of living organisms.

Carbon dioxide, contained in the earth's atmosphere, is the main source of carbon for living plants. In the process of photosynthesis (in the light) there is a process of photosynthesis, which is accompanied by the formation of glucose, the release of oxygen into the atmosphere.

Carbon dioxide does not have toxic properties, it does not support breathing. At a higher concentration of this substance in the atmosphere, a person experiences a delay in breathing, and severe headaches appear. In living organisms, carbon dioxide has an important physiological significance, for example, it is necessary for the regulation of vascular tone.

Features of reception

On an industrial scale, carbon dioxide can be separated from the flue gas. In addition, CO2 is a by-product of the decomposition of dolomite, limestone. Modern plants for the production of carbon dioxide suggest the use of an aqueous solution of ethanamine, which adsorbs the gas contained in the flue gas.

In the laboratory, carbon dioxide is released by the interaction of carbonates or hydrocarbons with acids.

Use of carbon dioxide

This acidic oxide is used in industry as a disintegrant or preservative. On the product packaging, this connection is indicated as E290. In liquid form, carbon dioxide is used in fire extinguishers to extinguish fires. Carbon monoxide (4) is used to produce carbonated water and lemonade drinks.