lab-Copper (II) Oxide - Name-Blake Cordell Partner-Todd...

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Name-Blake Cordell Cordell 1 Partner-Todd Handell Collecting the Precipitate: Its as easy as ABC-123 04/17/08 Introduction The purpose of the lab is to form and collect two different precipitates. The experimenters will accomplish their goal by a process called gravimetric precipitation. The goal is to form Copper (II) Oxide from heating Copper (II) hydroxide. To do the lab the experimenters must start by making an aqueous solution of copper (II) sulfate. Then they must mix and stir sodium hydroxide and copper (II) sulfate in a beaker. Once this has been stirred adequately place the beaker on a ring stand that is over a Bunsen burner flame. A color change and a precipitate form that indicate a reaction has occurred. Then allow the beaker to cool and filter out the CuO 2 and mass the solid precipitate. The percent yield in the experiment was 647 percent. Procedures 1) Make an aqueous solution of Copper (II) Sulfate by dissolving approximately four grams of it in approximately 50 mL of water in a beaker. 2) Get approximately 10.0 mL of the sodium hydroxide solution (6M) in a separate
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lab-Copper (II) Oxide - Name-Blake Cordell Partner-Todd...

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