Mass Transfer
Flash distillation is

Same as differential distillation
Same as simple distillation
Used for multicomponent systems like crude refining
Most useful for handling binary systems

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Mass Transfer
In saturated gas, the

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

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