Mass Transfer
In case of a desorber (stripper), the

Temperature remains unaffected
Operating line always lies above the equilibrium curve
Operating line always lies below the equilibrium curve
Temperature always increases

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Mass Transfer
If a two phase system is in physical equilibrium; then it means that, the

Total pressure throughout the liquid phase is equal to that throughout the vapor phase
All of these
Escaping tendency of each component from the liquid phase to the vapor phase is exactly equal to that from vapor phase to liquid phase
Temperature of the liquid phase is equal to that of the vapor phase

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