An iron electrode in a solution of iron (II) nitrate  and a magnesium strip in a solution of magnesium nitrate form a galvanic cell.  The size of the  magnesium strip is observed to decrease over time.  Sodium nitrate is found in the salt bridge. a, Sketch a diagram of the cell. Include all substances on the diagram. b, Label the anode and the cathode. c, Write out the two half-reactions and the overall cell reaction.  d, On the diagram Indicate the direction of electron flow, the direction the reactants are moving, and the direction the ions in the salt bridge are moving.

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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An iron electrode in a solution of iron (II) nitrate  and a magnesium strip in a solution of magnesium nitrate form a galvanic cell.  The size of the  magnesium strip is observed to decrease over time.  Sodium nitrate is found in the salt bridge.

a, Sketch a diagram of the cell. Include all substances on the diagram.

b, Label the anode and the cathode.

c, Write out the two half-reactions and the overall cell reaction. 

d, On the diagram Indicate the direction of electron flow, the direction the reactants are moving, and the direction the ions in the salt bridge are moving. 

 

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