Choose the condition that must be specified in order to liquify CO2 (triple point for CO2 is - 57 C and 5.2 atm).

Pressure must be kept below 5.2 atm.

Temperature must be kept above - 57 C.

Pressure must be kept below 5.2 atm. and temperature must be kept above 57 C.

Pressure and temperature must be kept below 5.2 atm. and - 57 C respectively.

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

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.