Chemical Engineering Thermodynamics
Free energy

Remains unchanged in reversible processes carried at constant temperature and pressure
All of these
Change during a spontaneous process has a negative value
Decreases in all spontaneous (or irreversible) processes

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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

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

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