Oxides definition these are binary compounds, i.e., formed by only two chemical elements, of which the more electronegative is oxygen.
Content Index :
- 1 Importance
- 1.1 Calcium oxide (CaO)
- 1.2 Magnesium oxide (MgO)
- 1.3 Silicon oxide (SiO2)
- 1.4 Carbon monoxide (CO)
- 1.5 Carbon dioxide (CO2)
- 1.6 Hydrogen peroxide (H2O2)
Importance of oxides :
These are some of the most important oxides present in our daily life:
Calcium Oxide (CaO):
This compound is a white powder known as virgin lime or quicklime that, when reacted with water, gives rise to calcium hydroxide (Ca (OH) 2), known as extinct lime, quenched lime or hydrated lime. This base is used to paint walls , protecting it from leaks, and in trees to repel insects.
Calcium oxide is important because it is widely used in agriculture to correct the pH of acid soils. However, care must be taken with the way this application is performed, since CaO reacts with the water present in our skin and causes burns. In addition, it also causes damage to the respiratory system and can cause blindness.
Other applications of CaO are: in construction, in the preparation of mortar, cement and ceramics; in the manufacture of metallurgical bricks, in the treatment of water and sewers, as an insecticide and fungicide, in the purification of sugars, vegetable oils and fruit juices, in the production of glass, Na2CO3 and CaCl (ClO).
Magnesium Oxide (MgO):
MgO is a widely used white powder. It is used mixed with water, forming a solution known as milk of magnesia. It is used as stomach acid , since it reacts with the hydrochloric acid of our stomach and neutralizes the environment.
Silicon Oxide (SiO2):
SiO2 is known as silica and is present in the sand, being also in crystalline form, as in quartz, topaz and amethyst.
Silica sand is used in the production of glass , together with the barrel (Na2CO3) and limestone (CaCO3). When these compounds are heated to a temperature of 1500 ° C, a mixture of sodium and calcium silicates is formed, which are cooled to form the glass we know.
Carbon monoxide (CO):
Carbon monoxide is a pollutant and extremely toxic gas that is released in incomplete combustion. Exposure to this gas can occur through pollution caused by burning fossil fuels, such as petroleum products, and cigarette smoke.
CO is also used in steel mills to produce metallic iron , reducing iron oxide III in the hematite.
Carbon dioxide (CO2):
It is one of the main causes of environmental problems, such as the greenhouse effect, global warming and acid rain. It is released in the complete combustion of fuels that contain carbon in its composition and also in our breathing.
This is the gas present in soft drinks and carbonated water . In the solid state, it is called dry ice and due to its sublimation property, that is, it passes directly from the solid state to the gaseous state, it releases a white smoke that is widely used in shows, theaters, parties and movies .
Hydrogen peroxide (H2O2):
In aqueous solution, hydrogen peroxide is called hydrogen peroxide and is used (3%) as an antiseptic and bleach . In higher concentrations, it is used to lighten hair; and in concentrations higher than 30%, it is used in industries such as wood discoloration, textile fibers and rocket propulsion.
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