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admin
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 Posted: Mon Jul 27, 2009 9:56 am Post subject: Question 51 |
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mohsinalam5969
Joined: 18 Apr 2011
Posts: 48
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| Posted: Sun May 08, 2011 10:04 am Post subject: |
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| Fractional distillation is used to separate mixtures of miscible liquids, such as ethanol and water. The process depends on the components of the mixture having different boiling points. The liquid is heated so that it turns into a gas. The vapours pass up a fractionating column where they are gradually cooled. As each of the components of the mixture cools to its boiling point, it turns back into a liquid. The different components of the mixture condense at different levels in the fractionating column and thus may be separated. |
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