Conclusion of Midterm :: essays research papers

Error AnalysisIn such a abundant science laboratory, so many errors can occur and even one gnomish one can ruineverything. One could have missed a procedure or done a procedure incorrectly. Another could have been apply the incorrect amount of liquid or sludge. Someonecould have lost a test-tube or labeled it wrong causing the results to be mixed.Using besides much water in the solubility tests or not getting every last(predicate) measurements almostexactly accurate could be two sources of error. One big mistake could be creatinga vacuum in the fractional Distillation quit of the lab. One careless mistake couldhave been doing the calculations incorrectly.ConclusionThe sludge lab is a long and complicated lab. So much can go wrong soeasily. So we had to be very careful when doing this lab. It was basically a recapof all our previous labs done this year. First we used the sectional Distillation.Then we used the Solubility lab and the density labs. Only new part wasidentifying the metal, but that wasnt very hard. So it was good that we reviewedour lab reports. This way we knew what procedures to take and what mistakes notto make. So it seems like we did everything right because the results make sense.To get and identify Fraction I, we had to do a lot. First we filtered thesludge. Then we took 25cm3 of the sludge and separated it into three parts. So wetook the first fraction and experimented on it. We purified it and determined its stewing point, density and solubility. We in addition had to see if it had an odor andwhether it was flammable or not. After doing all this we realized that this Fractionwas Isopropanol Alcohol. We came to this conclusion by looking at our data forthe solubility, density, odor, boiling point, and flammability.To get and identify Fraction III, we had to continue from Fraction I. Aftergetting the first fraction we had to change tubes and et 2 more fractions. We threwaway the 2nd because it was notwithstanding a leftover mix. We took the third fraction andexperimented on it. We purified it and determined its boiling point, density andsolubility. We also had to see if it had an odor and whether it was flammable ornot. After doing all this we realized that this Fraction was Water. We came to thisconclusion by looking at our data for the solubility, density, odor, boiling point,and flammability.Determining the soluble solid was hard and a rigorous procedure.