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For a Galvanic Cell Using Fe | Fe2+(1

Question 22

Multiple Choice

For a galvanic cell using Fe | Fe2+(1.0 M) and Pb | Pb2+(1.0 M) half-cells,which of the following statements is correct?
Fe2+(aq) + 2e- → Fe(s) ; E° = -0.41 V
Pb2+(aq) + 2e- → Pb(s) ; E° = -0.13 V


A) The iron electrode is the cathode.
B) When the cell has completely discharged,the concentration of Pb2+ is zero.
C) The mass of the iron electrode increases during discharge.
D) The concentration of Pb2+ decreases during discharge.
E) Electrons leave the lead electrode to pass through the external circuit during discharge.

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