Science - Distillation Experiment

Today in Science we are doing a distillation experiment and there are 2 parts to the experiment. The first part of the experiment is evaporation and what is going to happen is there is going to be a liquid which is turning into gas and that = heat. The second part of the experiment is condensation and what is going to happen is there is going to be a gas which is turning into a liquid and that = cooling.

Aim: To separate a solution (Coke / Coke Zero) to form a solid + a liquid.

Hypothesis: I think that the coke inside the conical flask is going to evaporate through the delivery tube and the liquid will turn clear inside the test tube. The reason the coke is going to evaporate is because when the coke gets heated by the bunsen burner, the coke is going to boil up with is going to make the coke evaporate. I think that both liquids will be the same for both cokes because it will lose the solids added to both of them. In the regular coke I think the sugar will stay as a solid while most of the other products in the solution will be a liquid. In the coke zero I think instead of the sugar the sweetener will stay solid/

Equipment: A solution of coke / diet coke, conical flask, heatproof mat, a delivery tube and bung, Bunsen burner, tripod, gauze mat, retort stand, boss head and clamp, test tube.

Method:

1. Set up the equipment as shown in the diagram.

2. Add approximately 50mL of coke to your conical flask.

3. Light your Bunsen burner, open the air hole and gently push your Bunsen burner under the tripod.

4. Heat the solution until most of the solvent has been evaporated. Turn off your Bunsen burner.

Observation: What I saw happened was the coke boiled under the heat and the liquid evaporated through the delivery tube. We caught the liquid and it was clear while the solid stayed in the flask. The solid that was left was sugar. The sugar in the coke zero was like a small brown sludge like the regular coke but looked more like dust.

Conclusion: My hypothesis was correct because like I said in my hypothesis, the coke would boil because it was getting heated by the bunsen burner which made the coke evaporate through the delivery tube. The liquid that was trapped in the test tube was clear like i said in my hypothesis as well. The regular coke had more sugar because their was more solids in the regular coke than their were in the coke zero.

Here are photos of our setup and our experiment: