Mass Transfer
Heat sensitive materials with very high latent heat of vaporisation may be economically separated using

Distillation
Liquid extraction
Absorption
Evaporation

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Mass Transfer
Henry's law states that the

Vapour pressure is equal to the product of the mole fraction and total pressure
Partial pressure of a component over a solution is proportional to its mole fraction in the liquid
Partial pressure of a component over a solution is proportional to the mole fraction in the vapour
Partial pressure is equal to the product of the mole fraction and total pressure

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Mass Transfer
Inside the distillation column, the

Driving force for the vapour flow is the pressure drop
None of these
Pressure increases gradually from bottom to the top of the column
Liquids are not always at their bubble points

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