NEETChemistryGeneral Organic Chemistry
Three different liquid mixtures are described below based on their physical properties: Mixture X: Contains two miscible liquids with a boiling point difference of 8 K . Mixture Y: Contains an organic liquid which is immiscible with water but volatile in steam. Mixture Z: Contains a liquid that has a normal boiling point of 550 K but decomposes at 480 K . Which of the following represents the most suitable sequence o
Options
- AFractional distillation, Steam distillation, Distillation under reduced pressure
- BSimple distillation, Steam distillation, Distillation under reduced pressure
- CFractional distillation, Solvent extraction, Distillation under reduced pressure
- DFractional distillation, Steam distillation, Simple distillation
Correct answer
A. Fractional distillation, Steam distillation, Distillation under reduced pressure
Step-by-step solution
Mixture X contains liquids with a small boiling point difference ( 8 K ). Such mixtures cannot be separated by simple distillation and require fractional distillation. Mixture Y contains an organic liquid that is immiscible with water and volatile in steam. The standard technique for purifying such substances is steam distillation. Mixture Z contains a high-boiling liquid that decomposes below its normal boiling point. It must be purified using distillation under reduced pressure (vacuum distillation), which lowers