How to Convert the Volume of Co2 Gas to Liquid

By Eric Moll

Under normal atmospheric pressure, carbon dioxide does not have a liquid phase. When the temperature falls below -78.5º C or -109.3º F, the gas transforms directly into solid through deposition. In the other direction, the solid, also known as dry ice, does not melt into a liquid but sublimates directly into a gas. Liquid carbon dioxide only exists at pressures above five times normal atmospheric pressure. Converting between gas and liquid, therefore, depends entirely on pressure. For this calculation, convert between gas at one atmosphere of pressure around the freezing point of water, and liquid at room temperature and 56 atmospheres of pressure.

About the Author

Eric Moll began writing professionally in 2006. He wrote an opinion column for the "Arizona Daily Wildcat" and worked as an editor for "Persona Literary Magazine." He has a Bachelor of Science in environmental science and creative writing from the University of Arizona.