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Recycling Aluminum

Recycling Aluminum - Recycling Aluminum Kevin Phipps Parag...

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Recycling Aluminum Kevin Phipps Parag Mahanti October 8, 2008
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PURPOSE: The purpose of this lab was to scale down a given procedure for the recycling of aluminum in order to produce 23 g of alum, and then find its percent yield and melting point. Strips of the aluminum can totaling 1.308 g were added to 65.4 mL 1.4 M KOH with heat. 2 Al(s) + 2 KOH(aq) + 6 H 2 O(l) 2K + (aq) + 2 Al(OH) - 4 (aq) + 3H 2 (g) OBSERVATIONS: A few big bubbles appeared as soon as KOH was added to the aluminum. Bubble production gradually increased as reactants were heated. Liquid turned dark brown. All strips dissolved. Only solid left was coloring of can. Contents of the beaker were put through a gravity filter and rinsed with 6.15 mL distilled H 2 O. OBSERVATIONS: Resulting liquid turned orange. Chunks of paper from can coloring were left behind in filter. 26.1 mL of 9M H 2 SO 4 was added to solution in the beaker and heat was applied.
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