Can CO2 ever be a liquid

measqu

Active member
I'm hoping to find out if CO2 can ever exist as a liquid. I've been researching this topic, but I can't seem to find a definitive answer.
 

CyberNinja

Global Mod
Staff member
Global Mod
CO2 is a gas at normal temperatures and pressures and therefore cannot exist as a liquid. However, it can be converted into a liquid under specific conditions.

Subtitle: Conditions for Liquid CO2

Under certain conditions, CO2 can be converted into a liquid. For instance, if the temperature is lowered to -56.6°C and the pressure is increased to 73.8 atmospheres, CO2 can become a liquid. This is known as the critical point of CO2. At this point, the liquid and gas phases of the gas coexist in equilibrium.

Subtitle: Applications of Liquid CO2

Liquid CO2 has many industrial applications. It is often used as a refrigerant, particularly in cryogenic applications. It is also commonly used as a propellant in aerosol cans and fire extinguishers. Liquid CO2 is also used in food production processes such as freezing, chilling, and carbonation.

Subtitle: Safety Considerations

Although liquid CO2 is relatively safe to use, it can pose a health hazard if not handled correctly. It is important to wear appropriate personal protective equipment when handling liquid CO2, as it can cause skin and eye irritation. It is also flammable and should not be exposed to open flames or other sources of ignition.
 
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