Mass Transfer
When acetone is added in a two layer mixture of methyl isobutyl ketone and water at 30°C, the acetone distributes between the two layers and the composition of the layer follows two solubility curves. For this system,

Both the phases become identical at a particular common point on both the solubility curves called the plait point
All of these
As the acetone concentration increases, the solubility curves approach each other
The distribution curve which is a plot between x (acetone concentration in one phase) and y (acetone concentration in other phase) is analogous to x-y curve used in distillation and absorption termina

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

Pr = Sc = 1; total mass, momentum and thermal diffusivity will be the same
Both A & B
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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