Separation Techniques Fractional Distillation Flashcards Preview

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Flashcards in Separation Techniques Fractional Distillation Deck (6)
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1

Fractional Distillation separates

Miscible liquids

2

Step 1

Mixture is heated. At 78°C ethanol begins to boil, some water evaporates too, so mixture of ethanol and water vapour rises up column

3

Step 2

Vapours condense on glass beads in the column making them hit

4

Step 3

When the beads reach about 78°C ethanol vapour no longer condenses on them. Only water vapour does. The water drips back into the flask while the ethanol is forced into the condenser.

5

Step 4

Ethanol vapour condenses in Liebig condenser
Liquid ethanol drips into collecting beaker

6

Step 5

Eventually reading on the thermometer goes above 78°C. This shows all the ethanol has been removed