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.

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

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Mass Transfer
The rate of solid-liquid extraction is limited by the

Phase change of the solute as it dissolves in the solvent
Diffusion of the solute from the solution in contact with the particle to the main bulk of the solution
All of these
Diffusion of the solute through the solvent in the pores to the outside of the particle

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Mass Transfer
Blowdown in a cooling tower

Is undesirable
Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities
All of these
Increases the scale forming tendencies of water

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