Mass Transfer
An example of elutioh is

Recovery of vegetable oils from seeds
Separation of uranium oxide from its ore by H₂SO₄ in a Pachuca tank
Separation of sugar from sugar beet by hot water
Dissolution of tannin out of tree barks by water

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Mass Transfer
Dew point of an air-water vapor mixture

All of the listed here
At constant humidity & total pressure is fixed
Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve
Decreases with decrease in pressure

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