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willstaruss22
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Let's say you have a 20 bar atmosphere of 95% nitrogen, 3% oxygen, 1% argon and 1% Co2 cooled to 0 F. Would Co2 be liquid or gas?
It's the partial pressure that matters, not the total pressure.willstaruss22 said:Here's where I'm confused is it the partial pressure of Co2 that determines which state its in or the total atmosphere? Because if in this scenario the temperature were -40 F Co2 would be liquid with the total atmosphere but it would be gas at partial pressure.
willstaruss22 said:Here's where I'm confused is it the partial pressure of Co2 that determines which state its in or the total atmosphere? Because if in this scenario the temperature were -40 F Co2 would be liquid with the total atmosphere but it would be gas at partial pressure.
At room temperature, CO2 exists as a gas. It has a boiling point of -78.5 degrees Celsius and a melting point of -56.6 degrees Celsius, which are both well below room temperature. Therefore, it would need to be under high pressure to exist as a liquid at room temperature.
In order for CO2 to become a liquid, it needs to be at a temperature below its critical point of 31.1 degrees Celsius and at a pressure of at least 73.8 atmospheres. At this point, the gas and liquid phases of CO2 are in equilibrium, and it can exist as a liquid.
Yes, CO2 can exist as both a liquid and a gas depending on the temperature and pressure conditions. At normal atmospheric pressure and temperatures above -56.6 degrees Celsius, CO2 is a gas. However, at lower temperatures and/or higher pressures, it can exist as a liquid.
The phase of CO2 can significantly affect its properties. As a gas, CO2 is less dense and more compressible than as a liquid. It also has different thermal conductivity and diffusion rates in each phase. Additionally, the liquid phase of CO2 is highly soluble, making it a useful solvent in industrial applications.
Yes, CO2 can transition directly from a gas to a solid phase through a process called sublimation. This occurs at temperatures below -78.5 degrees Celsius and at atmospheric pressure. Dry ice, which is solid CO2, is commonly used for refrigeration and special effects due to its ability to sublimate into a gas at room temperature.