Mass Transfer
For water-ethanol system, the minimum reflux ratio

Cannot be computed
Is computed from the intercept of the operating line
Is computed from the slope of the upper operating line that is tangent to the equilibrium curve
Is the optimum reflux ratio

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Mass Transfer
In steam distillation, the

Temperature is higher than the boiling point of either component
Temperature is 100°C
Product must be immiscible with water
Temperature is more than 100° C

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Mass Transfer
An example of elutioh is

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

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