Mass Transfer
In saturated gas, the

None of the listed here
Vapour is in equilibrium with the liquid at the room temperature
Partial pressure of vapour equals the vapour pressure of the liquid at room temperature
Vapour is in equilibrium with the liquid at the gas temperature

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Mass Transfer
Priming in a distillation column

Reduces the overall pressure drop
Is desirable from point efficiency consideration
Results from very low gas velocity
Is characterised by the presence of foam throughout the space between trays

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