Recycling Aluminum - Recycling Aluminum By Gardner Yost...

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Recycling Aluminum By Gardner Yost September 24, 2008 Lab Instructor: Tyi McCray Lab Table O
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Purpose: To effectively scale down the procedure of isolation Alum from 23 grams of Aluminum by means of gravity and vacuum filtrations. Once the Alum has been isolated the percent yield and melting point will be determined. Observations: -2.4 grams Aluminum combined with 67 milliliters 2 M KOH. This reactions causes fast bubbling around each of the aluminum strips. The bubbles are hydrogen gas. As the reaction proceeds the solution slowly becomes black in color. Some plastic residue is left behind -Filtration of the solution renders a clear liquid. Black residue and the plastic remain in the filter paper. -The addition of the initial volume of sulphuric acid causes white, fluffy precipitate to form. However the with the addition of the remainder of the sulphuric acid and stirring the precipitate dissolves, again leaving a clear liquid. -After filtration the liquid remained clear. Some white solids remained in the
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Recycling Aluminum - Recycling Aluminum By Gardner Yost...

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