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# Diagram of a Galvanic Cell

APCHEM-EO7OEL

$$Mg^{2+} + 2e^- \rightarrow Mg \quad \quad E^o_{cell} (V) = -2.37$$

$$Cu^{2+} + 2e^- \rightarrow Cu \quad \quad E^o_{cell} (V) = 0.34$$

Analyze the data above.

Which of the following substances should be used for Electrode B in this galvanic cell?

A

$Mg^{2+}$

B

$Mg$

C

$Cu^{2+}$

D

$Cu$