A 1.0 M solution of aluminum nitrate is placed in a beaker with a strip of aluminum metal. A 1.0 M solution of nickel (II) sulfate is placed in a second beaker with a strip of nickel metal.  The two beakers are connected by a salt bridge, and the two metal electrodes are linked by wires to a voltmeter.  Which electrode serves as the anode and which serves as the cathode? Sketch the cell indicating the charge on the electrodes and the direction of the current flow. Write the chemical equation for the overall cell reaction What is the emf (Eº) generated by the cell under standard conditions? Which electrode gains mass and which loses mass? What would the emf of cell be if the concentration of the aluminum nitrate solution was changed to 1.25 M, the nickel (II) sulfate solution was changed to 0.025 M.

Question

A 1.0 M solution of aluminum nitrate is placed in a beaker with a strip of aluminum metal. A 1.0 M solution of nickel (II) sulfate is placed in a second beaker with a strip of nickel metal.  The two beakers are connected by a salt bridge, and the two metal electrodes are linked by wires to a voltmeter. 

  1. Which electrode serves as the anode and which serves as the cathode?
  2. Sketch the cell indicating the charge on the electrodes and the direction of the current flow.
  3. Write the chemical equation for the overall cell reaction
  4. What is the emf (Eº) generated by the cell under standard conditions?
  5. Which electrode gains mass and which loses mass?
  6. What would the emf of cell be if the concentration of the aluminum nitrate solution was changed to 1.25 M, the nickel (II) sulfate solution was changed to 0.025 M.

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