Fractional distillation
Fractional Distillation
Name: Pinaki Das Partner's Name: Alice Kim Course: Advance Science Grade 9 Slot: B Date: November 6th 2013
Fractional distillation separates a mixture of liquids based on differences in the boiling points of the liquid. The purpose of this experiment was to identify, separate and characterize liquids from a mixture. This experiment took two days to complete. On the first day, we examined the properties of the solution and prepared a heating curve. A certain amount of the liquid mixture was poured into a small flask fitted with a two-hole stopper. In the first hole there was a thermometer and in the second hole there was a rubber tube which was attached to a piece of glass. The flask was placed on top of a wire stand and it was clamped to a peg-board. A burner was placed under the wire stand. A cold water bath was placed close by with a test tube into it. The rubber tubing from the flask with the mixture was inserted into the test tube in the water bath. The mixture was slowly heated and the temperature was recorded every ten seconds. The mixture stopped heating before the test tube was dry. On the second day, we used the heating curve to help perform a fractional distillation to separate the liquids. The same apparatus as day one was set up with a fresh sample of the liquid mixture. Three test tubes were labeled as fraction I,II and III. The mixture was fractionally distilled and the collecting tubes was switched at the appropriate temperature. The volume, flammability, odour, density and boiling point of each fractions were recorded. After this experiment, we concluded that the liquids in the mixture were 2-propanol and water.
Data/ Results:
Heating Curve Data
Time (s)
Temperature (°c)
0
22.0
10
22.8
20
22.9
Name: Pinaki Das Partner's Name: Alice Kim Course: Advance Science Grade 9 Slot: B Date: November 6th 2013
Fractional distillation separates a mixture of liquids based on differences in the boiling points of the liquid. The purpose of this experiment was to identify, separate and characterize liquids from a mixture. This experiment took two days to complete. On the first day, we examined the properties of the solution and prepared a heating curve. A certain amount of the liquid mixture was poured into a small flask fitted with a two-hole stopper. In the first hole there was a thermometer and in the second hole there was a rubber tube which was attached to a piece of glass. The flask was placed on top of a wire stand and it was clamped to a peg-board. A burner was placed under the wire stand. A cold water bath was placed close by with a test tube into it. The rubber tubing from the flask with the mixture was inserted into the test tube in the water bath. The mixture was slowly heated and the temperature was recorded every ten seconds. The mixture stopped heating before the test tube was dry. On the second day, we used the heating curve to help perform a fractional distillation to separate the liquids. The same apparatus as day one was set up with a fresh sample of the liquid mixture. Three test tubes were labeled as fraction I,II and III. The mixture was fractionally distilled and the collecting tubes was switched at the appropriate temperature. The volume, flammability, odour, density and boiling point of each fractions were recorded. After this experiment, we concluded that the liquids in the mixture were 2-propanol and water.
Data/ Results:
Heating Curve Data
Time (s)
Temperature (°c)
0
22.0
10
22.8
20
22.9