Separation techniques
- Created by: cninamatos
- Created on: 20-05-16 08:07
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Separation Techniques
- Simple distillation
- Can be used to separate two miscible liquids (i.e. water and ethanol)
- Liquids must have 2 different boiling points
- Separates a pure liquid from a mixture of liquids
- Commonly used to separate water and ethanol
- Ethanol begins to boil first and travels up the neck of the glass
- Cold water is running through the condenser
- Water in the condenser cools down the ethanol
- Ethanol drips into the beaker
- Fractional distillation
- Used to separate 2 miscible liquids
- Liquids must have different boiling points
- Produces a purer sample than simple distillation
- Commonly used to separate water and ethanol
- Mixture is in a container
- Heated so the first (i.e. ethanol) with the lowest boiling point evaporates
- Vapour travels up the fractionating column, which has beads, so any of liquid number 2 (i.e. water) that has evaporated will condense again due to the fact that the beads are at the boiling temperature of the first liquid
- Vapour continues through the condenser, where it condenses because of the cooling water
- It drips into a beaker where it is collected
- Funnel
- Used to separate two imiscible liquids…
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