Mass Transfer
Binary distillation involves the mass transfer by __________ at the gas-liquid interface.

Either A or B
Unidirectional diffusion from liquid to gas phase
A counter diffusion at an almost equal molar rate
Unidirectional diffusion from gas to liquid phase

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Mass Transfer
An example of elutioh is

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

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