Chemical Engineering Thermodynamics
Which of the following is an undesirable characteristics of a refrigerant ?

None of these
Its vapor pressure at the condenser temperature should be very high
It should be non-explosive
It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils

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Chemical Engineering Thermodynamics
Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which

A homogeneous solution (say of phenol water) is formed
None of these
Two liquids are completely separated into two layers
Mutual solubility of the two liquids shows a decreasing trend

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