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Copper Reduction and Recovery

Due Today: 1. Copper Reduction Pre-Lab Homework: 1. Copper Reduction Formal Lab Report 2. Redox Titration Pre-Lab. Copper Reduction and Recovery. Objective. Recover a copper sample via reduction reaction Determine the efficacy of the experiment . Key Terms.

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Copper Reduction and Recovery

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  1. Due Today: 1. Copper Reduction Pre-Lab Homework: 1. Copper Reduction Formal Lab Report 2. Redox Titration Pre-Lab Copper Reduction and Recovery

  2. Objective • Recover a copper sample via reduction reaction • Determine the efficacy of the experiment

  3. Key Terms • Oxidation-Reduction (Redox) Reaction: • Follow the transfer of electrons • Matched reaction – you cannot have one without the other

  4. Procedure Notes • Part I: Preparation of Copper Solution • Calculate the amount of CuSO4˙5H2O needed • DO NOT forget to include the 5 water molecules • Check your calculation before you make your solution

  5. Procedure notes • USE A VOLUMETRIC FLASK TO MAKE YOUR SOLUTION!!! • Use a 400 mL beaker to heat and stir your solution • Work in the hood

  6. Procedure Notes • Part II: Reduction of Copper • Calculate the amount of zinc needed to react with the copper (II) sulfate • Check your zinc calculation before you proceed • The solution should be colorless at the end of 30 minutes • May take less than 30 minutes

  7. Procedure Notes • Part III: Separation of Copper • Vacuum filtration • Weigh the filter paper • Place sample in the over to dry (optional)

  8. Procedure notes • Determine the mass of your copper • Tare a watch glass (zero the balance) • Use a micro spatula to put your copper sample and filter paper onto the watch glass

  9. Waste • Recovered copper – solid waste container • Filter Paper – Trash can • Filtrate – Copper recovery filtrate container

  10. Risk assessment • Hydrochloric Acid • Danger • Inhalation Hazard • Corrosive

  11. Risk assessment • Ethanol • Danger • Flammable • Respiratory Irritant • Acetone • Danger • Flammable • Skin Irritant

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