Question

State the technique used for separating the following mixture:

Pure water from sea water

Answer 1

Distillation.

• Distillation is the process of separating a liquid from its solution by evaporating it and then condensing its vapor.
• The process is carried out in a specially designed apparatus called the distillation flask.
• A solution is heated in the distillation flask due to which the liquid component gets evaporated, leaving the solid component behind.
• The vapor of the liquid passes through a tube called the condenser.
• The condenser is kept cool so that vapor can cool down.
• Finally, the vapors are collected in a receiving flask. This way, we get pure liquid from its solution.
• The distilled water that is used by doctors, chemists and pharmaceutical industries is obtained by distillation.