CO2 below 30.98 degree centigrade exits as 

  1. CO2 VAPOUR
  2. CO2 GAS
  3. CO2 LIQUID
  4. NONE OF THESE

Answers (1)

At temperatures between –56.6 and +31.1°C, and pressures of at least 5.2 bar, CO2 can exist in liquid form. Liquid CO2 cannot exist at atmospheric pressure (1 bar). At temperatures below –56.6°C, CO2 can occur in the solid state. Without pressure, COwill exist in gas form.

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