Mass Transfer
The expression, y(1 - x)/x(1 - y) is for

Selectivity
Absorption factor
Relative volatility
Murphree efficiency

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Mass Transfer
For absorbing a sparingly soluble gas in a liquid

Liquid side mass transfer co-efficient should be decreased
Liquid side mass transfer co-efficient should be increased
Mass transfer co-efficient must be kept constant
Gas side mass transfer co-efficient should be increased

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Mass Transfer
In case of absorption with exothermic reaction, for fluids having

Both A & B
Pr = Sc = 1; total mass, momentum and thermal diffusivity will be the same
Pr = Sc; percentage change in heat and mass transfer flux will be the same for a given change in the degree of turbulence
Pr = Sc ; there won

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