Question

what are the applications of frictional distillation

Answer 1

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➡️ By fractional distillation , we can separate liquid which differ in their boiling 20°C or more .

➡️ The liquid mixture is boiled in the distillation flask fitted with a fractionating column and liebig condenser .

➡️ The mixed vapour enter the fractionating column, where the vapours of the higher -boiling (I. e., less volatile) liquid contents and Trickle back into the distillation flask .

➡️ The vapours of the lower -boiling (I. e., more volatile) liquid, however, pass into the liebig condenser, where they condense - the liquid is collected in the receiver .

➡️ The temperature of the boiling method remains constant in the lower - boiling liquid distils completely .

➡️ Then the temperature again rises till the higher - boiling liquid starts distilling .

➡️ The receiver is quickly change it to collect the higher- boiling liquid .

➡️ The Liquid obtained by boiling a mixture at different temperatures are called fractions and the method of fractional distillation is also called as fractionation .

➡️ By this method, we can separate :


✳️ Benzene (boiling point 80°C) from Toluene (boiling point 110°C).

✳️ Ethyl Alcohol (boiling point 78°C) from water ( boiling point 100°C) , and

✳️ Petrol , diesel and kerosene from crude oil.



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