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Sublimation of CO2

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The sublimation temperature of solid CO2 is -78.5 "C at 1 atm pressure. At what minimum pressure must gaseous CO2 be stored in a fire extinguisher at 25 degrees C to ensure that some "snow" is produced when the gas is released to atmospheric pressure?

Use mico JT = 1.3 for CO2 and assume that it is independent of pressure and temperature.

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This solution contains the basic concept of sublimation of CO2 along with a useful diagram, but no calculation.

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State functions and heat capacities for ideal gases
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The sublimation temperature of solid CO2 is -78.5 "C at 1 atm pressure. at what minimum pressure must gaseous CO2 be stored in a fire extinguisher at 25"C to ensure that some "snow" is produced when the gas ...

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Tania Dey, PhD
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  • MSc,
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