describe how you would use fractional distillation to separate a solution of liquid A (boiling point 56 degree celsius) liquid B ( boiling point 72 degree celsius) and liquid C ( boiling point 100 degree celsius)
Answers
Answer:
Fractional distillation separates miscible liquids that have different boiling points. It is useful for separating ethanol from a mixture of ethanol and water, and for separating crude oil into different products such as petrol, diesel and kerosene.
When the mixture is heated:
the liquids boil at their boiling point.
their vapours rise through a column which is hot at the bottom and cooler at the top.
the vapour condense when they reach a part of the column that is below the temperature of their boiling point.
the liquids which condense in the column drip back into the flask.
any gas that makes it to the top of the fractioning column enters the condenser where it is changed to a liquid.
the liquid runs into a collecting vessel.
distillates collected over a narrow temperature range are known as fractions.
Fractional distillation process to separate ethanol from water
Answer:
The solution that is fed is heated at high temperature . When it is introduced in column , the component with higher boiling point condenses first and the component with lower boiling point condenses later . This is because :The heated liquid with lower boiling point boils first and form vapors.