What is Co2 – Troubleinthepeace

In this article we will share with you about CO2, What is CO2?, molecular structure of CO2, physicochemical properties, preparation & application of CO2. Notes when using CO2.

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In everyday life, we breathe in O2 and give out CO2 to sustain life. Therefore, CO2 is not a foreign substance to us. But do you know the physical and chemical properties, applications or harms of CO2 yet?

If you are still wondering about the above, you should not ignore this article of Trung Son Company we.


What is CO2?


What is CO2?

Carbon dioxide (other names carbon dioxide, carbonic anhydride, carbon dioxide). As a widely known chemical compound, it is frequently referred to by its chemical formula as CO2.

CO2 is a compound that, under normal conditions, is a gas and is present in low concentrations in the Earth’s atmosphere. In solid form, it is called dry ice. Consists of one carbon atom and two oxygen atoms.

CO2 . molecular structure


CO2 . molecular structure


Physical properties of CO2

Under normal conditions, CO2 is a colorless, odorless and slightly acidic gas that dissolves well in water, weighing 1,524 times more than air.

CO2 gas does not participate in the combustion and liquefaction reaction at -78 degrees Celsius. In addition, CO2 can be decomposed at high temperatures of 2000 degrees Celsius into CO and O2.

Chemical properties of CO2

CO2 is acidic oxide

CO2 dissolves in water to form carbonic acid (a very weak acid).

CO2 + H2O H2CO3

CO2 reacts with basic oxide → salt.

CaO + CO2 → CaCO3 (t0)

CO2 reacts with a basic solution → salt + H2O

NaOH + CO2 → NaHCO3

2NaOH + CO2 → Na2CO3 + H2O

CO2 is stable, at high temperatures exhibits oxidizing properties when reacting with strong reducing agents

CO2 + 2Mg → 2MgO + C

CO2 + C → 2CO

Note: Used to explain that CO2 is not used to extinguish metal fires.


CO2 is created from many different reasons such as

Respiration in humans and animals:

C6H12O6 + 6O2 → 6CO2 + 6H2O

Alcohol fermentation:

C6H12O6 → 2CO2 + 2C2H5OH

Fuel combustion:

CxHy + (x + y/4)O2 → xCO2 + y/2H2O

In industry:

C + O2 → CO2 (complete combustion of coke in the air)

CaCO3 → CaO + CO2 (10000C)

In the lab:

CaCO3 + 2HCl → CaCl2 + CO2 + H2O


Application of CO2 in the food industry:


co2 is used in the processing of soft drinks liquid and solid CO2 are important refrigerants, they are involved in the storage and transportation of ice cream and frozen foods.CO2 is used to make gas for many drinks such as coca, pepsi, 7up, … are very useful in regulating drinking water. Baking powder used in baked goods produces carbon dioxide gas, which causes the dough to swell, by creating pores containing air bubbles. Bread yeast produces carbon dioxide by fermentation in the dough, while chemical baking powders release carbon dioxide when heated or reacted with acids. Food extraction: supercritical carbon dioxide is used. Used in the extraction of colors and flavors in foods to remove oils and fats.

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Application of CO2 In industry:

Life jackets typically contain small canisters of carbon dioxide that are compressed to quickly inflate. Compressed carbon dioxide steel pipes are also sold to supply compressed air for air guns, paintballs, bicycle tire pumps, as well as to make mineral water xence. Supercritical carbon dioxide is used as a liquid phase in spray paints. , which reduces organic solvents by 80%. The rapid evaporation of liquid carbon dioxide is used for explosives in coal mines. CO2 is also used as a gas medium for welding technology. It acts as a compression agent and when dissolved in crude oil underground, it significantly reduces the viscosity of crude oil, creating conditions for Oil flows faster underground into the suction well. In addition, CO2 is used as an inexpensive, non-flammable pressurized gas. CO2 is used to produce urea: CO2 + 2NH3 → H2O + (NH2)2CO (1800C; 200at)

CO2 Application For Life

CO2 gas extinguishes fire, some fire extinguishers contain compressed liquid CO2. Dry ice is used to clean surfaces instead of sand, causing artificial rain, stage smoke. Carbon dioxide combines with Oxygen and gaseous components. other to stimulate faster and deeper breathing, helping to deal with human respiratory related problems. Plants require carbon dioxide to carry out photosynthesis. Used in plants, and greenhouses can be enriched in their atmospheres with the addition of CO2 to stimulate plant growth.



The greenhouse effect caused by CO2

CO2 is non-toxic, non-flammable, but when the concentration is too high, it will be hazardous to human health because it is heavier than air, so it can accumulate in airtight places.

Low levels of carbon dioxide can increase breathing and headaches. If the concentration of this gas is high, it will cause severe hypoxia – although not toxic gas inhalation, many people can die if oxygen is burned in an environment full of carbon dioxide. Symptoms include: loss of movement, unconsciousness, dizziness, moodiness, nausea. In addition, skin contact with frozen carbon dioxide gas (dry ice) also causes frostbite of body parts.


Symptoms of CO2 poisoning

In addition to chest tightness. Initial symptoms of CO poisoning may include headache, fatigue, dizziness, drowsiness, or nausea. Sudden chest pain may occur in people with angina. During exposure elongated or high. Symptoms can worsen and include vomiting, confusion, and collapse in addition to loss of consciousness and muscle weakness. Symptoms vary widely from person to person. CO poisoning can occur earlier in the most susceptible people. Young children, the elderly, people with lung or heart disease. People at high altitudes, or people who already have high levels of CO in their blood, such as smokers. In addition, CO poisoning poses a special risk to the fetus.

How to deal with poisoning

CO2 is heavier than air, so stand above the floor and move victim to a higher area. Note: Only do this when the environment does not pose a danger to the first aider. If life-threatening factors are present, get medical help immediately. If there are no life-threatening factors, then Call a poison control center for instructions. In particular, only trained first-aiders can perform first-aid oxygen for people with carbon monoxide poisoning


When using

One feature is that the CO2 gas in the container is usually in a liquid state, when it turns into a gas, it needs to be heated. Therefore, the CO2 damper must be fitted with a heating element, otherwise the CO2 will freeze and block the air supply. It is recommended to use a respirator with valve (abbreviated English as: BVM) but only if the person is doing it. has now been trained on how to use it. Should learn about the benefits of installing carbon monoxide and carbon dioxide detectors

When storing and transporting

Liquid CO2 Stored in a sealed stec under pressure with insulation or in a sealed bottle under pressure. Liquid CO2 is loaded with a bottle of no more than 0.625kg/liter of storage equipment, loaded with a stec not exceeding 0.9kg/liter of container, to avoid collisions. forcefully into the bottle or stec, keep away from heat sources. In case of long-term storage in stec, a separate cooling system is required. Transporting liquid CO2 bottles needs to be stacked horizontally, the bottle valve is turned to one side, there is a cushion between the bottles, and the truck must have a roof.



CO2 . concentration meter

CO2 measurement is essential in many applications, from building automation and greenhouses to life sciences.

Today the company Zhongshan will introduce you to a equipment used to measure CO2 . concentration It is also possible to measure temperature and humidity. With great features like:

Dual display of CO2 concentration and humidity, temperature, dew point, or Wet Bulb

Maintain free NDIR (non-dispersive infrared) CO2 . sensor

Alerts when CO2 concentration exceeds user set threshold

Min/Max . values ​​review function

Function Auto Calibration

Data Hold function and Auto Power Off (with disable)

Low battery indicator

Tripod mount (tripod sold separately)

Complete with six AAA batteries, USB cable, PC software, and soft carrying case.

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Trung Son Company currently offering this product line. If you have a need to use it, please contact us via our website or call our staff directly.

Hopefully through this article, Trung Son Company can help readers have more useful information about CO2. Thereby you understand what CO2 is as well as physicochemical properties and ways to prepare CO2…, If you have any questions related to CO2, please comment below for answers!!


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