At what pressure is dry ice formed
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At what pressure is dry ice formed

[From: ] [author: ] [Date: 11-04-24] [Hit: ]
CO2 will freeze at -78.5 C at standard atmospheric temperature. At any other pressure besides atmospheric, it will freeze at a temperature different from -78.......
We all know that carbon dioxide freezes on temperature -78.5 degrees celsius but i particularly want to know at what pressure does carbon dioxide form solid carbon dioxide also known as frozen ice .

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The freezing point for any substance depends on the temperature it is subjected to.
-78.5°C is freezing point for CO2 at 1 atm pressure ( generally mentioned since its at normal pressure)
And its -56.65°C at 5.11 atm ( its triple point)

You can try searching for CO2 phase diagram to get more details

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At temperatures below −56.4 °C (−69.5 °F) and pressures below 5.13 atm (the triple point), CO2 changes from a solid to a gas with no intervening liquid form, through a process called sublimation.

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You mean known as dry ice?
CO2 will freeze at -78.5 C at standard atmospheric temperature. At any other pressure besides atmospheric, it will freeze at a temperature different from -78.5 C
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