Fractional Distillation

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Presentation transcript:

Fractional Distillation LO: to explain how you separate mixture of solutions if they have different boiling points Discuss and write an answer in your jotterbook - I have salt water and I want to collect pure water to drink. How could I do this? Use this apparatus to help you answer the question. Bunsen burner Glass sheet(cold) salt water Tripod stand beaker

Fractional Distillation Distillation can be used to separate a mixture of 2 or more liquids if they have a different boiling points Eg. Alcohol and water Petroleum (crude oil)

Distillation demo The liquid with the lower boiling point will boil, condense first and be collected in the tube

Distillation of crude oil video

Theory book pg 129 – 130 Then, do question 12 Ext: Discuss page 132 End of chapter question in pairs

Can you remember the three lab methods for separating mixtures? filtering chromatography distillation Which of these does each method do? A separates a solvent from a solution B separates a solid from a liquid C separates substances with different solubility's