Mass Transfer
The apex of an equilateral-triangular coordinate (in ternary liquid system) represents a/an

Ternary mixture
Binary mixture
Insoluble binary system
Pure component

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Mass Transfer
In an operating distillation column, the

Driving force for the vapor flow is the pressure drop, as the pressure decreases gradually from the bottom to the top of the column
Highest temperature is encountered at the top of the column
Driving force for the liquid flow is its specific weight
Vapors and liquids are at their dew point and bubble point respectively

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