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

Cannot be computed
Is the optimum reflux ratio
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

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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.

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

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Mass Transfer
Dew point of an air-water vapor mixture

All of the listed here
Decreases with decrease in pressure
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

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