Discussion 1

Discussion 1 - In this lab scraps of aluminum foil were...

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In this lab, scraps of aluminum foil were turned into common alum. This is a common process that industries use, in which aluminum is chemically converted into an aluminum compound. This process is priceless because it takes an extremely small amount of energy and it uses low-cost chemicals to perform. Alum consists of hydrated double salts of metals with crystals in octahedral shapes. These were present in the final step of the lab. The alum finally produced in this lab was called potassium aluminum sulfate dodecahydrate or KAl(SO 4 ) 2 •12H 2 O. The first stage was needed to dissolve the aluminum by mixing a strong aqueous base, potassium hydroxide, with the scraps of aluminum. The reaction caused a salt to form. This salt contains both metals that will be in the alum, though it is part of a complex ion, making it soluble. Then methyl red indicator was added after we filter the solution. This is an indicator that turns yellow for base solutions or red (sometimes pink) in acidic solutions. After the methyl red was added, the solution was placed in an ice bath
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Discussion 1 - In this lab scraps of aluminum foil were...

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