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,
(A) As the acetone concentration increases, the solubility curves approach
each other
(B) Both the phases become identical at a particular common point on both
the solubility curves called the plait point
(C) 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 terminates on the x = y diagonal at the
concentration of the plait point
(D) All (A), (B) and (C