How can waste be made useful Investigation 7

How can waste be made useful Investigation 7 - I...

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Investigation 7: How the Waste Can Be Made Useful TA: Jaro Arero October 13, 2009 Wednesday 8:40-10:30
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Lab Members: Introduction: Upon being hired by a chemical waste disposal company, the goal of this experiment was to determine how the byproducts of combining waste solutions could be made into lucrative products. By combining one or more solutions the precipitates, or solids formed from the reaction, can either be more easily disposed of or can be sold to various companies. By following the ionic compound solubility rules and using double displacement for each of the reactions it was possible to determine which combination of solutions would yield beneficial precipitates. Procedure: To synthesize and subsequently separate our precipitates, specific amounts of initial reactants were measured in a graduated cylinder and combined in a glass tubes labeled either 1,2, or 3. The first solutions that were combined were 4ml of Ag No 3 (aq) and 2ml of BaCl 2 (aq), and were integrated in tube 1.
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The second set of solutions that were combined were 2ml of Al(NO 3 ) 3 (aq) and 6ml of NaOH(aq), and were integrated in tube 2. The third set of solutions combined were 3ml of H 2 SO 4 (aq) and 3ml BaCl 2 (aq), and were integrated in tube 3. Three filter papers were weighed and added to a filtering suction device individually. Solutions 1 and 2 were initially put into a centrifuge to more clearly separate their precipitate. Solution 3 was not centrifuged. All three final combined solutions were poured into separate filtering devices and refiltered a second time after all liquid had run through in the chance that any precipitate had passed through in the initial filtering process. The filter papers were then placed on glass plates and allowed to evaporate as much water as possible before taking a final weight of the filter paper and
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This note was uploaded on 09/14/2011 for the course CHM 113 taught by Professor Anbar during the Spring '06 term at ASU.

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How can waste be made useful Investigation 7 - I...

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