Mass Transfer
When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption.

Dependent on the system; can be either lower or higher than
Always higher than
Always lower than
Same as

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Mass Transfer
McCabe-Thiele method

Can use any type of units
Is more accurate than Ponchan-Savarit method
Uses molal units for material and energy balance
Uses weight fractions to express liquid and vapour composition

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Mass Transfer
For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.

Binary mixture is represented by the apex
Binary mixture is represented by any point inside
Ternery mixture is represented by the sides
Pure component is represented by the apex

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