V
I
S
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Go to Mr. Scott’s Website and navigate to the Chemistry I: Redox page. Scroll down to the virtual labs and click on the link to the Virtual Voltaic Cell Lab. You will see a basic cell setup as pictured below.
Click here to select metals for the left-hand side of the cell.
Click here to select metals for the right-hand side of the cell.
Click here to select a solution for the left-hand side of the cell.
Click here to select a solution for the right-hand side of the cell.
Make the following combinations from the metals list:
Ag + Cu
Ag + Zn
Ag + H
2
Cu + H
2
Cu + Zn Zn + H
2
For each of the above, place the metal in a solution of its own ions . For the hydrogen electrode, place it in an acid solution.
Record the following for each cell (6 items):
•
Cell voltage
•
For each Side (left and right) o Metal used o Whether it is oxidation or reduction o Whether it is going INTO solution or OUT of solution o Whether the concentration is going up or down in the beaker
•
Draw an arrow by the red light showing the DIRECTION of electron movement.
Next, we’ll try some combinations that are not normally assembled in this experiment and observe what happens.
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Zinc metal in HCl and Cu metal in Cu(NO
3
)
2
•
Zinc metal in Cu(NO
3
)
2
and Copper metal in Cu(NO
3
)
2
•
Copper metal and Zinc metal both in AgNO
3
For each combination:
•
Draw and describe what happens using the diagram provided on the report sheet
•
Explain why the voltage reading is the way it is