Question

The distillation technique most suited for separating glycerol from spent-lye in the soap industry is:

• A. Fractional distillation
• B. Steam distillation
• C. Distillation under reduced pressure
• D. Simple distillation

Answer 1

The correct option is C Distillation under reduced pressure

The distillation technique most suited for separating glycerol from spent-lye is distillation under reduced pressure because glycerol has a high boiling point and since in this method the external pressure is lowered, it boils at a lower temperature.