Question

explain fractional distillation with an activity

Answer 1

the process of separating the parts of a liquid mixture by heating it. As the temperature goes up, each part in turn becomes a gas, which then cools as it moves up a tube and can be collected as a liquid.

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hope it helps.

How to use fractional distillation to separate ethanol and water?

1. Set up the apparatus.

2. Heat the mixture until the temperature at the top of the fractionating column is 78°C (which is the boiling point of ethanol). The ethanol vapour passes into the condenser, gets cooled and collects in a beaker kept at the other end of the condenser. The temperature is maintained at 78°C until no more liquid is collected in the beaker. (Note that very little water distills over because 78°C is less that the boiling point of water. Almost all the water vapour will condense before reaching the top of the fractionating and falls back to the distillation flask)

3. Replace the beaker with another beaker.

4. Now, heat the mixture until the temperature at the top of the fractionating column is 100°C (which is the boiling point of water). The water vapour passes into the condenser, gets cooled and collects in a beaker kept at the other end of the condenser.

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Answer 2

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