At room temperature, what phase is carbon dioxide in?

1 Answer
Dr. Hayek
Aug 28, 2016

Carbon dioxide is a gas at room temperature. The sublimation point of carbon dioxide (dry ice) is #-78.5^@C#.

Explanation:

Carbon dioxide is a gas at room temperature. The sublimation point of carbon dioxide (dry ice) is #-78.5^@C#.

Not that #CO_2# does not turn to liquid when it is cooled down, it turns to solid state instead, this is due to the type of intermolecular forces between the #CO_2# molecules which are London dispersion forces (or Van der Waals forces).

Sublimation is the process of solid turning into gas without passing through the liquid state, where, melting is the process of a solid turning into liquid upon heating.
kgortney.pbworks.com

here is a picture of a dry ice turning into gas at room temperature:
sciencevogel.wikispaces.com

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