lab report

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QUESTIONS 1. Identify and discuss one or two aspects of the experimental design or your own technique that reduced the percent yield in your synthesis of alum experiment. The experimental value of the alum is lower than the theoretical value. This is because of the presence of impurities in the aluminum foil such as the plastic and paint organic compounds that protects the aluminum from corrosive reaction with the chemicals in the lab apparatus Also there were some metals in the aluminum foil contain some other metals to make it hard and stable thus this caused an error on the yield compared to the theoretical value and also the process of filtration reduced the percent yield in that the ethanol that was used to get all the crystals into the Buchner funnel but there was a lot of crystals stick with the beaker which was not be able to be filtered
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