Chemistry - Liquid Solution Question with Solution | TestHub
A solution of has following pressure-composition curve , azeotropic composition of A & B has equal mol% of both liquid then select the correct statement(s) about fractional distillation at constant pressure.
Molar mass of A & B is 20 & 40 gm/mole.
Options:(select one or more)
Answer:
Solution:
Azeotrope Type: The minimum in the vapor pressure curve indicates a maximum-boiling azeotrope at .
Initial Composition: Equal mass % gives a mole fraction of , which means the mixture has an excess of component A relative to the azeotrope.
Residue Behavior: During fractional distillation of a maximum-boiling azeotrope, the azeotropic mixture always leaves behind the highest boiling component as the residual liquid, so neither pure A nor pure B can be obtained in the residue (Statement D is correct).
Distillate Behavior: Since the initial mixture is richer in A (), the more volatile component in this region (pure A) will be collected in the distillate (Statement B is correct).
