Chemical Engineering Thermodynamics
Which of the following is true for Virial equation of state?

Virial co-efficients are function of temperature only
For some gases, Virial equations and ideal gas equations are the same
Virial co-efficients are universal constants
Virial co-efficients

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Chemical Engineering Thermodynamics
Choose the condition that must be specified in order to liquify CO₂ (triple point for CO₂ is - 57°C and 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 must be kept below 5.2 atm
Pressure and temperature must be kept below 5.2 atm. and - 57°C respectively

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