Question 1
A galvanic cell consists of a Al
3+/Al half-cell and a standard hydrogen electrode. If the Al
3+/Al half-cell standard cell functions as the anode, and the standard cell potential is 1.66 V, what is the standard reduction potential for the Al
3+/Al half-cell?
◦ -0.55 V
◦ -1.66 V
◦ +1.66 V
◦ +0.55 V
Question 2
What is the relationship between the standard cell potentials,
E°, for the following two galvanic cell reactions?
| I. | 3 Cu2+(aq) + 2 Al(s) → 3 Cu(s) + 2 Al3+(aq) |
| II. | 30 Cu2+(aq) + 22 Al(s) → 30 Cu(s) + 22 Al3+(aq) |
◦
E°(I) = 10
E°(II)
◦
E°(I) =
E°(II)
◦
E°(I) =
E°(II)
◦
E°(I) =
E°(II)
10
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