Experiment 5 (best one yet) - Chemistry 117 321 Erin Callahan and Kasie Coogan Experiment 4 Conservation of Mass and Reaction Types Copper Recovery

Experiment 5 (best one yet) - Chemistry 117 321 Erin...

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Chemistry 117 – 321 Erin Callahan and Kasie Coogan Experiment 4: Conservation of Mass and Reaction Types: Copper Recovery Cycle September 29, 2016 Introduction The purpose of the experiment was to test the Law of Conservation of Mass. This was done by taking elemental copper and putting it through multiple reactions, then eventually converting it back to its elemental form. The Law of Conservation of Mass was proposed by French chemist Antoine Lavoisier in the 18 th century, and has since been tested so many times that when a change in mass appears to accompany a reaction, chemists assume they made an experimental error. This experiment also demonstrated the four types of reactions that occur in aqueous solutions, and the ability to convert elements into compounds and to separate compounds into their constituent elements. In this experiment, safety goggles were necessary for safety, along with the use of gloves when handling sulfuric acid, nitric acid, and sodium hydroxide because all three are corrosive chemicals that require care when handled. Materials .49 g of cut copper sheet, 250-mL Erlenmeyer flask, approximately 3 mL of concentrated nitric acid, fumigation hood, water, 30 mL of 3.0 M sodium hydroxide, stirring rod, red litmus paper, Bunsen burner, ring stand, iron ring, wire gauze, 2 glass funnels, 2 clay triangles, 3 beakers, 2 pieces of filter paper, 15 mL of 6.0 M sulfuric acid, concentrated hydrochloric acid, squares of
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  • Spring '16
  • Shane Cullian
  • Chemistry, Sulfuric acid, Erin Callahan, Kasie Coogan

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