Lab Report 5 February

Lab Report 5 - Simple and Fractional Distillation of and Ethanol-Water Mixture Objective The objective of this experiment is to use simple

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Simple and Fractional Distillation of and Ethanol-Water Mixture Objective The objective of this experiment is to use simple distillation and fractional distillation to separate an ethanol-water mixture into ethanol and water cleanly. Introduction Distillation is a technique which is used to purify liquids and also to separate mixtures. In the laboratory, there are two different types of distillation that can be utilized. Simple distillation is used when the boiling points of the liquids in the mixture are different by 40°C or more. This is a method used for a clean separation. Fractional distillation, a method which uses a copper sponge to filter the liquids, is used for mixtures with the boiling points of the liquids differing by 8-10°C. Evaporation and condensation are continuously occurring during this process due to the copper sponge. The boiling point of water is 100°C and the boiling point of ethanol is 72°C. Since the difference between the boiling points is less than 40°C (28°C), the simple distillation method will not yield as pure results as the fractional distillation method. In order to test the purity of the separated liquids once the distillation is complete, a flame test is used. If
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This note was uploaded on 07/15/2008 for the course CH 221 taught by Professor Tilley during the Spring '08 term at Stonehill.

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Lab Report 5 - Simple and Fractional Distillation of and Ethanol-Water Mixture Objective The objective of this experiment is to use simple

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