Question

Which of the following statment(s) is/are correct regarding Vacuum Distillation?

• A. Distillation is carried out at excess pressure.
• B. Distillation is carried out at reduced pressure.
• C. Vacuumistillation can be carried out at both excess and reduced pressures.
• D. It is carried out for compounds which decompose at a temperature below their normal boiling point.

Answer 1

Answer: (B), (D)

It is carried out for compounds which decompose at a temperature below their normal boiling point.

Vacuum Distillation:
It is distillation under reduced pressure. It is carried our for compounds which decompose at a temperature below their
normal boiling point cannot be distilled at atmospheric pressure.
On reducing the external pressure, the liquid will boil at lower temperature.