Answer the questions below. When you have finished, submit this assignment to your teacher by the due date for full credit.
(8 points)
Score
1. The diagram shows an electrochemical cell with a copper strip in a solution of copper (II) sulfate (left) and a zinc strip in a solution of zinc sulfate (right).
In your response, do the following:
• Label all parts (1–9), including the solutions in each beaker and the connecting tube.
• Label which cell is the cathode and which cell is the anode. Include the charge on each strip.
• Show, or describe in detail, the flow of electrons.
• Describe what type of electrochemical cell is pictured. Explain how the cell works. Include the oxidation and reduction half-reactions in your explanation.
Answer:
(8 points)
Score
2. The diagram shows a Zn/MnO2 alkaline dry cell.
In your response, do the following:
• Label all parts.
• Label the cathode and the anode, including the charges on each.
• Show the flow of electrons.
• Explain how the cell works. Include the oxidation and reduction half-reactions in your explanation.
Answer:
(8 points)
Score
3. Compare and contrast a dry cell with a voltaic cell by filling in the table.
Answer:
Dry Cells Voltaic Cells or Wet Cells
Half-Cells
Anode
Cathode
Electrolytes
Oxidation Reaction
Reduction Reaction
Bridge
Relative Size
(8 points)
Score
4. The diagram shows an electrochemical cell with a gold strip (left) and aluminum glasses (right).
In your response, do the following:
• Label all parts.
• Label the cathode and the anode, including the charge on each.
• Show the flow of electrons.
• Describe what type of electrochemical cell is pictured and what its use is.
• Explain how the cell works. Include the oxidation and reduction half-reactions in your explanation.
Answer:
(8 points)
Score
5. Crude copper has many metal impurities (for example, lead, zinc, nickel, and others) and does not conduct electricity well, so ultra pure copper is needed. Explain how an electrochemical cell is used to purify copper. You may include a diagram of the electrochemical cell in your explanation.
Answer:
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