Choose the condition that must be specified in order to liquify CO2 (t – McqOptions

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1.	Choose the condition that must be specified in order to liquify CO2 (triple point for CO2 is - 57°C and 5.2 atm).
A.	Pressure must be kept below 5.2 atm.
B.	Temperature must be kept above - 57°C.
C.	Pressure must be kept below 5.2 atm. and temperature must be kept above 57°C.
D.	Pressure and temperature must be kept below 5.2 atm. and - 57°C respectively.
Answer» E.

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