Sludge Mixture

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Our original sludge mixture had a green liquid at the top, below it, there was a very dark green liquid. At the bottom of our sludge, there was a green solid, and some pink or brown balls at the very bottom of our sludge. Also, around halfway up the test tube, there was a ring around the test tube of white substance.
After filtering our sludge mixture we had separated our liquids and solids. We fractionally distilled our liquids. One of our liquids boiled off at about 78 degrees and another boiled off at 97.5 degrees. We collected the liquids in three test tubes, F1, F2, and F3. Our F1 liquid had the density of .79 g/ml, had the boiling point of 78 degrees celsius, smelled like alcohol, was clear, and was very flammable. All of the characteristic …show more content…
It was also clear and odorless. All of the characteristic properties lead our group to believe that F3 was water. Water has the density of 1.00 the boiling point of 100 degrees celsius and is inflammable, clear, and odorless.
Our F2 liquid was an azeotropic mixture of isopropanol and water. It had two boiling points, 78, and 97.5. It had the density of .96. The density is higher than usual because we switched from F2 to F3 later than we should have. An azeotropic mixture is a mixture of liquids that are so tightly bound together that when one of the liquids boils off, the other liquid would boil off with it, but it would require a little bit more energy to take the other liquid with it. That is why we had liquid in our F2.
After Filtering our sludge mixture we were left with solids, we added water to dissolve our water soluble substances, and then sieved our sand and copper balls, to remove the copper balls. We were left with sand. The sand had the density of 2.29, was not soluble in either isopropyl alcohol nor water, and our sand was the same shape as shape as other sand, when we looked at it under a microscope. However, our sand was blue, this could be attributed to another substance that we had in our sludge that was blue, such as copper
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