Physical Chemistry Answers

5. Describe the function of a salt bridge. What would happen if the half-cell compartments of a galvanic cell were not connected?

6. Draw galvanic cells based on the net ionic equations for the following reactions. For each reaction:

Label the anode and cathode.
Write the oxidation and reduction half reactions for the cell.
Indicate the electrode materials, and electrolyte components.
Indicate the direction of electron flow and ion migration.
Note: The spectator ion in each reaction is SO42-. Build the galvanic cells using a salt bridge with Na2SO4 as the electrolyte. You might find the following file helpful in drawing the cells.







7. Write the cell notation for each cell in question 6.

1. Is the anode the positive or negative electrode in a galvanic cell?

2. What is the direction of electron flow in the external circuit of a galvanic cell?

3. In a galvanic cell, in what direction do positive ions migrate to maintain a neutral charge in the half-cells?

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